% Proof 1 at 38.26 (+ 0.22) seconds.

% Length of proof is 125.

% Level of proof is 25.

% Maximum clause weight is 27.000.

% Given clauses 1209.

 

2 A * ((x * y) * A) = (A * x) * (y * A) # label(non_clause) # label(goal).  [goal].

3 0 * x = x.  [assumption].

4 x * 0 = x.  [assumption].

5 x * x' = 0.  [assumption].

6 x' * x = 0.  [assumption].

7 x * (x \ y) = y.  [assumption].

8 x \ (x * y) = y.  [assumption].

9 (x * y) / y = x.  [assumption].

10 (x / y) * y = x.  [assumption].

11 x' * (x * y) = y.  [assumption].

12 (x * x) * y = x * (x * y).  [assumption].

13 (x * (y * x)) * z = x * (y * (x * z)).  [assumption].

14 (x * y)' = x' * y'.  [assumption].

15 (x * (y * A)) * x = (x * y) * (A * x).  [assumption].

17 (A * c3) * (c4 * A) != A * ((c3 * c4) * A).  [deny(2)].

21 x \ 0 = x'.  [para(5(a,1),8(a,1,2))].

22 x'' = x.  [para(6(a,1),8(a,1,2)),rewrite([21(3)])].

29 x \ y = x' * y.  [para(7(a,1),11(a,1,2)),flip(a)].

30 x / (y * x) = y'.  [para(11(a,1),9(a,1,1))].

32 x * (x' * y) = y.  [back_rewrite(7),rewrite([29(1)])].

33 (x * (x * y)) / y = x * x.  [para(12(a,1),9(a,1,1))].

36 (x * (y * (x * z))) / z = x * (y * x).  [para(13(a,1),9(a,1,1))].

37 x * ((y / x) * (x * z)) = (x * y) * z.  [para(10(a,1),13(a,1,1,2)),flip(a)].

40 (x * (y * (y * x))) * z = x * (y * (y * (x * z))).  [para(12(a,1),13(a,1,1,2)),rewrite([12(7)])].

46 (x / y)' * y' = x'.  [para(10(a,1),14(a,1,1)),flip(a)].

48 (x * A) * x = x * (A * x).  [para(3(a,1),15(a,1,1,2)),rewrite([4(5)])].

49 (x * A') * (A * x) = x * x.  [para(6(a,1),15(a,1,1,2)),rewrite([4(2)]),flip(a)].

51 ((x * y) * (A * x)) / x = x * (y * A).  [para(15(a,1),9(a,1,1))].

54 (x' * (y' * A')) * ((x * y) * (A * x)) = x.  [para(15(a,1),11(a,1,2)),rewrite([14(4),14(4)])].

59 (A * x) * (A * A) = A * (x * (A * A)).  [para(15(a,1),13(a,1))].

64 (x / y)' = y / x.  [para(10(a,1),30(a,1,2)),flip(a)].

68 (x / y) * x' = y'.  [back_rewrite(46),rewrite([64(2)])].

73 x' / y' = y / x.  [para(68(a,1),9(a,1,1))].

76 (x' / y) * x = y'.  [para(22(a,1),68(a,1,2))].

85 (x * y) / (x' * y) = x * x.  [para(32(a,1),33(a,1,1,2))].

91 (x' * y') / z' = z / (x * y).  [para(14(a,1),73(a,1,1))].

93 x / y' = y / x'.  [para(22(a,1),73(a,1,1))].

95 (x / y) / z' = z / (y / x).  [para(64(a,1),73(a,1,1))].

107 (x' * y) / x = x' * (y * x').  [para(6(a,1),36(a,1,1,2,2)),rewrite([4(3)])].

110 x * ((y / (x * z)) * x) = (x * y) / z.  [para(10(a,1),36(a,1,1,2)),flip(a)].

139 (x * y) * x' = x * (y / x).  [para(5(a,1),37(a,1,2,2)),rewrite([4(3)]),flip(a)].

140 (x' * y) * x = x' * (y / x').  [para(6(a,1),37(a,1,2,2)),rewrite([4(5)]),flip(a)].

143 (x / y) * (y * z) = y' * ((y * x) * z).  [para(37(a,1),11(a,1,2)),flip(a)].

144 (x' * y) * (x * z) = x' * ((y / x') * z).  [para(11(a,1),37(a,1,2,2)),flip(a)].

148 x' * ((x / ((x' * y') * (x / y))) * z) = (y / x) * ((x * y) * z).  [para(37(a,1),13(a,2,2)),rewrite([143(4),144(7),93(6),14(5),14(3),64(6

)])].

151 (x * y) * (x' * z) = x * ((y / x) * z).  [para(32(a,1),37(a,1,2,2)),flip(a)].

160 (x * (A * x)) / x = x * A.  [para(48(a,1),9(a,1,1))].

230 (x * x) / (A * x) = x * A'.  [para(49(a,1),9(a,1,1))].

238 (A * x) / (x * x) = x' * A.  [para(49(a,1),30(a,1,2)),rewrite([14(8),22(8)])].

249 (x * (y * (z * (z * (y * x))))) * u = x * (y * (z * (z * (y * (x * u))))).  [para(40(a,1),13(a,1,1,2)),rewrite([40(11)])].

386 (x * A) * (x / (x * A)) = x.  [para(48(a,1),139(a,1,1)),rewrite([14(6),151(8),9(3),5(4),4(2)]),flip(a)].

402 x * ((x / A) / x) = x / A.  [para(10(a,1),386(a,1,1)),rewrite([10(6)])].

403 x / (x * A) = x' * (A' / x').  [para(386(a,1),11(a,1,2)),rewrite([14(3),140(5)]),flip(a)].

407 x' * (x / (x / A')) = A' / x.  [para(76(a,1),386(a,1,1)),rewrite([76(9),93(6),64(5)])].

422 x / (A / x') = x * (x' / A).  [para(402(a,1),32(a,1,2)),rewrite([93(9),64(8)]),flip(a)].

472 x * (x * (A / x)) = x * A.  [para(238(a,1),139(a,2,2)),rewrite([12(4),14(6),151(8),160(4),139(4),12(9),32(8)])].

475 x * (A / x) = A.  [para(472(a,1),11(a,1,2)),rewrite([11(4)]),flip(a)].

487 A / x = x' * A.  [para(475(a,1),11(a,1,2)),flip(a)].

497 x' * (A' / x') = x * (x' / A).  [back_rewrite(422),rewrite([487(3),22(2),403(3)])].

507 x / (x * A) = x * (x' / A).  [back_rewrite(403),rewrite([497(9)])].

511 x / A = x * A'.  [para(487(a,1),64(a,1,1)),rewrite([14(4),22(2)]),flip(a)].

515 x / A' = x * A.  [para(487(a,1),93(a,1)),rewrite([22(2)]),flip(a)].

520 x / (x * A) = A'.  [back_rewrite(507),rewrite([511(6),32(8)])].

538 A' / x = x' * A'.  [back_rewrite(407),rewrite([515(4),520(4)]),flip(a)].

552 (x * (A * y)) / y = y * ((y' * x) * A).  [para(32(a,1),51(a,1,1,1))].

571 (x * A') * A = x.  [para(511(a,1),10(a,1,1))].

577 A' * (x * A) = x.  [para(520(a,1),10(a,1,1))].

580 (x * A) / x = A.  [para(520(a,1),64(a,1,1)),rewrite([22(3)]),flip(a)].

582 A' * x = x * A'.  [para(520(a,1),76(a,1,1)),rewrite([14(7),22(5)])].

596 A * x = x * A.  [para(580(a,1),10(a,1,1))].

605 A * (x * A') = x.  [back_rewrite(571),rewrite([596(5,R)])].

609 (x * (A * y)) / y = y * (A * (y' * x)).  [back_rewrite(552),rewrite([596(8,R)])].

620 (A * c3) * (A * c4) != A * (A * (c3 * c4)).  [back_rewrite(17),rewrite([596(6,R),596(13,R)])].

672 x' * (A * x) = A.  [para(596(a,2),11(a,1,2))].

678 (A * (A * x)) * y = A * (x * (A * y)).  [para(596(a,2),13(a,1,1,2))].

679 A * (x * (y * x)) = x * (y * (x * A)).  [para(596(a,2),13(a,1))].

680 A * (x * (y * x)) = x * (y * (A * x)).  [para(596(a,2),13(a,2,2,2)),rewrite([596(4,R)])].

685 x' * A = A * x'.  [para(596(a,2),29(a,2)),rewrite([29(2)])].

686 x * (A * x') = A.  [para(596(a,2),32(a,1,2))].

687 (A * (x * A)) / x = A * A.  [para(596(a,1),33(a,1,1,2))].

697 (A * (x * (A * x))) * y = A * (x * (x * (A * y))).  [para(596(a,2),40(a,1,1,2,2))].

724 A * (x * A) = x * (A * A).  [para(15(a,1),577(a,1,2)),rewrite([59(8),11(9)]),flip(a)].

730 x / (A * (x * A)) = A' * A'.  [para(577(a,1),85(a,1,1)),rewrite([22(3)])].

740 A * (A * x) = x * (A * A).  [para(605(a,1),15(a,2,1)),rewrite([596(6,R),605(6),596(4,R)])].

768 x * (A * y) = x * (y * A).  [para(54(a,1),30(a,1,2)),rewrite([609(5),11(4),14(10),22(5),14(8),22(5),22(6)])].

812 (A * A) / x = A * (x' * A).  [para(672(a,1),36(a,1,1,2))].

1393 x / (A' * A') = A * (x * A).  [para(687(a,1),95(a,1,1)),rewrite([812(5),22(3),730(9)]),flip(a)].

1439 x' * (A * (x * A)) = A * A.  [para(724(a,2),11(a,1,2))].

1452 x * (A * (x' * A)) = A * A.  [para(724(a,2),32(a,1,2))].

1681 (x * (y * A)) / (A * y) = x.  [para(768(a,1),9(a,1,1))].

1683 (x / (A * y)) * (y * A) = x.  [para(768(a,1),10(a,1))].

1684 (x / (y * A)) * (A * y) = x.  [para(768(a,2),10(a,1))].

2099 x / (A * y) = x / (y * A).  [para(10(a,1),1681(a,1,1))].

2258 (A * x) / y = (x * A) / y.  [para(1683(a,1),30(a,1,2)),rewrite([64(7)]),flip(a)].

2298 A * (A * (x / (y * A))) = (A * x) / y.  [para(1684(a,1),36(a,1,1,2)),rewrite([596(9,R)]),flip(a)].

2533 (A * (A * x)) / y = (x * (A * A)) / y.  [para(740(a,1),2258(a,1,1)),rewrite([596(9,R)]),flip(a)].

3320 x' * (A' * (x * A')) = A' * A'.  [para(1452(a,1),14(a,1,1)),rewrite([14(4),14(12),14(12),22(10)]),flip(a)].

3594 (x' * A) / y' = y / (A' * x).  [para(582(a,2),91(a,2,2)),rewrite([22(4)])].

5266 (x / (y * z)) * y = y' * ((y * x) / z).  [para(110(a,1),11(a,1,2)),flip(a)].

9681 (x / y) * (A * y) = y' * (A * (y * x)).  [para(596(a,2),143(a,1,2)),rewrite([596(8,R)])].

10060 (x * y) * (A * x') = x * (A * (y / x)).  [para(685(a,1),144(a,1,2)),rewrite([22(2),22(7),22(7),596(8,R)])].

10956 (x' * A) * ((A * x) * y) = x' * (A * (x * (A * y))).  [para(596(a,2),148(a,2,2,1)),rewrite([511(7),144(9),538(6),22(4),582(8,R),3320(9)

,1393(7),13(6),487(9)]),flip(a)].

18985 (A * (x * (y * x))) * (x' * z) = x * (((y * (x * A)) / x) * z).  [para(679(a,2),151(a,1,1))].

19224 (x * (A * (x' * y))) * (x * z) = x' * ((A * (x * (y * x))) * z).  [para(680(a,2),143(a,2,2,1)),rewrite([609(4)])].

19231 x * (((y * (x * A)) / x) * z) = x * ((x * (A * (x' * y))) * z).  [para(680(a,2),151(a,1,1)),rewrite([18985(7),609(10)])].

19272 (A * (x * (y * x))) * (x' * z) = x * ((x * (A * (x' * y))) * z).  [back_rewrite(18985),rewrite([19231(13)])].

24873 (A * (A * x)) / (y * A) = (x * (A * A)) / (A * y).  [para(2533(a,1),2099(a,1)),flip(a)].

38534 (x * (y * A)) / y = y * (A * (y' * x)).  [para(596(a,1),609(a,1,1,2))].

43730 A' * (x / (A' * y)) = A * ((A' * x) / y).  [para(5266(a,1),230(a,2)),rewrite([230(16),582(7,R),22(10)])].

43817 (A * (x * y)) * x' = x * (y / (A' * x)).  [para(3594(a,1),5266(a,2,2)),rewrite([487(5),14(4),22(2),22(2),596(3,R),22(7)])].

46287 x * (A * (x' * (y / x))) = y / (A' * x).  [para(9681(a,1),609(a,1,1)),rewrite([107(6),43817(6),11(7)]),flip(a)].

50958 x * (A * (x' * (y / (x * A)))) = y / x.  [para(10(a,1),38534(a,1,1)),flip(a)].

52078 x * (A * (x' * (y / (A * x)))) = y / x.  [para(596(a,2),50958(a,1,2,2,2,2))].

52094 x' * (A * (x * (y / x))) = (A * y) / x.  [para(50958(a,1),249(a,2,2,2,2)),rewrite([686(6),1439(6),12(7),2298(7)]),flip(a)].

52101 A * (x * (y / x)) = x * ((A * y) / x).  [para(50958(a,1),697(a,2,2,2)),rewrite([19272(11),1452(6),12(7),2298(7)]),flip(a)].

52280 x * ((A * (y * x)) / x) = A * (x * y).  [para(9(a,1),52101(a,1,2,2)),flip(a)].

52604 x / (A' * (y' * x)) = x * (A * (x' * y)).  [para(52280(a,1),32(a,1,2)),rewrite([93(11),14(10),14(10),22(10)]),flip(a)].

52698 x' * (A * (x * (A * y))) = x * (A * (A * (x' * y))).  [para(52280(a,1),38534(a,2,2,2)),rewrite([93(6),14(5),14(5),22(5),52604(6),19224(

8),596(7,R),107(9),678(9),10060(8),9(5)])].

52720 (x' * A) * ((A * x) * y) = x * (A * (A * (x' * y))).  [back_rewrite(10956),rewrite([52698(14)])].

53093 A * (x' * (y / (A * x))) = x' * (y / x).  [para(52078(a,1),11(a,1,2)),flip(a)].

53131 (A * x) / (y * A) = A * ((A' * x) / y).  [para(2099(a,1),52094(a,2)),rewrite([14(3),144(13),515(6),52720(12),53093(10),46287(8),43730(7

)]),flip(a)].

53220 (x * (A * A)) / (A * y) = A * (x / y).  [back_rewrite(24873),rewrite([53131(7),11(6)]),flip(a)].

53407 (A * (x / y)) * (A * y) = x * (A * A).  [para(53220(a,1),10(a,1,1))].

53970 (A * x) * (A * y) = A * (A * (x * y)).  [para(9(a,1),53407(a,1,1,2)),rewrite([724(10,R),596(9,R)])].

53971 $F.  [resolve(53970,a,620,a)].

 

============================== end of proof ==========================

 

% Proof 2 at 38.70 (+ 0.22) seconds.

% Length of proof is 319.

% Level of proof is 34.

% Maximum clause weight is 38.000.

% Given clauses 1210.

 

1 z * ((A * y) * z) = (z * A) * (y * z) # label(non_clause) # label(goal).  [goal].

3 0 * x = x.  [assumption].

4 x * 0 = x.  [assumption].

5 x * x' = 0.  [assumption].

6 x' * x = 0.  [assumption].

7 x * (x \ y) = y.  [assumption].

8 x \ (x * y) = y.  [assumption].

9 (x * y) / y = x.  [assumption].

10 (x / y) * y = x.  [assumption].

11 x' * (x * y) = y.  [assumption].

12 (x * x) * y = x * (x * y).  [assumption].

13 (x * (y * x)) * z = x * (y * (x * z)).  [assumption].

14 (x * y)' = x' * y'.  [assumption].

15 (x * (y * A)) * x = (x * y) * (A * x).  [assumption].

16 (c1 * A) * (c2 * c1) != c1 * ((A * c2) * c1).  [deny(1)].

18 0' = 0.  [para(5(a,1),3(a,1)),flip(a)].

21 x \ 0 = x'.  [para(5(a,1),8(a,1,2))].

22 x'' = x.  [para(6(a,1),8(a,1,2)),rewrite([21(3)])].

23 x / x = 0.  [para(3(a,1),9(a,1,1))].

29 x \ y = x' * y.  [para(7(a,1),11(a,1,2)),flip(a)].

30 x / (y * x) = y'.  [para(11(a,1),9(a,1,1))].

32 x * (x' * y) = y.  [back_rewrite(7),rewrite([29(1)])].

33 (x * (x * y)) / y = x * x.  [para(12(a,1),9(a,1,1))].

36 (x * (y * (x * z))) / z = x * (y * x).  [para(13(a,1),9(a,1,1))].

37 x * ((y / x) * (x * z)) = (x * y) * z.  [para(10(a,1),13(a,1,1,2)),flip(a)].

40 (x * (y * (y * x))) * z = x * (y * (y * (x * z))).  [para(12(a,1),13(a,1,1,2)),rewrite([12(7)])].

42 (x * (y * (z * (y * x)))) * u = x * (y * (z * (y * (x * u)))).  [para(13(a,1),13(a,1,1,2)),rewrite([13(9)])].

46 (x / y)' * y' = x'.  [para(10(a,1),14(a,1,1)),flip(a)].

47 (x' * y') * ((x * y) * z) = z.  [para(14(a,1),11(a,1,1))].

48 (x * A) * x = x * (A * x).  [para(3(a,1),15(a,1,1,2)),rewrite([4(5)])].

49 (x * A') * (A * x) = x * x.  [para(6(a,1),15(a,1,1,2)),rewrite([4(2)]),flip(a)].

51 ((x * y) * (A * x)) / x = x * (y * A).  [para(15(a,1),9(a,1,1))].

53 ((x / (y * A)) * y) * (A * (x / (y * A))) = x * (x / (y * A)).  [para(10(a,1),15(a,1,1)),flip(a)].

54 (x' * (y' * A')) * ((x * y) * (A * x)) = x.  [para(15(a,1),11(a,1,2)),rewrite([14(4),14(4)])].

56 (x * (y * (y * A))) * x = (x * (y * y)) * (A * x).  [para(12(a,1),15(a,1,1,2))].

57 (x * (x * (y * A))) * (x * x) = (x * (x * y)) * (A * (x * x)).  [para(12(a,1),15(a,1,1)),rewrite([12(8)])].

58 (x * ((x * y) * (A * x))) * z = x * ((x * (y * A)) * (x * z)).  [para(15(a,1),13(a,1,1,2))].

59 (A * x) * (A * A) = A * (x * (A * A)).  [para(15(a,1),13(a,1))].

61 (x * (y * (x * (z * A)))) * (x * (y * x)) = (x * (y * (x * z))) * (A * (x * (y * x))).  [para(13(a,1),15(a,1,1)),rewrite([13(11)])].

62 (x' * (y' * A')) * x' = (x' * y') * (A' * x').  [para(15(a,1),14(a,1,1)),rewrite([14(5),14(2),14(6),14(12),14(12)]),flip(a)].

64 (x / y)' = y / x.  [para(10(a,1),30(a,1,2)),flip(a)].

66 x / (y * (z * (y * x))) = y' * (z' * y').  [para(13(a,1),30(a,1,2)),rewrite([14(7),14(7)])].

68 (x / y) * x' = y'.  [back_rewrite(46),rewrite([64(2)])].

70 (x * y) * ((x' * y') * z) = z.  [para(14(a,1),32(a,1,2,1))].

73 x' / y' = y / x.  [para(68(a,1),9(a,1,1))].

74 x' * ((x / y) * (x' * z)) = (x' * y') * z.  [para(68(a,1),13(a,1,1,2)),flip(a)].

76 (x' / y) * x = y'.  [para(22(a,1),68(a,1,2))].

78 x / x' = x * x.  [para(5(a,1),33(a,1,1,2)),rewrite([4(2)])].

85 (x * y) / (x' * y) = x * x.  [para(32(a,1),33(a,1,1,2))].

91 (x' * y') / z' = z / (x * y).  [para(14(a,1),73(a,1,1))].

93 x / y' = y / x'.  [para(22(a,1),73(a,1,1))].

95 (x / y) / z' = z / (y / x).  [para(64(a,1),73(a,1,1))].

100 x * ((x' / y) * (x * z)) = (x * y') * z.  [para(76(a,1),13(a,1,1,2)),flip(a)].

107 (x' * y) / x = x' * (y * x').  [para(6(a,1),36(a,1,1,2,2)),rewrite([4(3)])].

109 ((x / y) * (z * x)) / y = (x / y) * (z * (x / y)).  [para(10(a,1),36(a,1,1,2,2))].

110 x * ((y / (x * z)) * x) = (x * y) / z.  [para(10(a,1),36(a,1,1,2)),flip(a)].

115 (x * (y * (z * (y * (x * u))))) / u = x * (y * (z * (y * x))).  [para(13(a,1),36(a,1,1,2)),rewrite([13(9)])].

116 ((x * (y * A)) * (z * ((x * y) * (A * x)))) / x = (x * (y * A)) * (z * (x * (y * A))).  [para(15(a,1),36(a,1,1,2,2))].

122 x * (((x' * y') / z) * x) = (x * z') / y.  [para(76(a,1),36(a,1,1,2)),rewrite([14(5)]),flip(a)].

123 (x * y) / z' = z / (x' * y').  [para(14(a,1),93(a,1,2)),flip(a)].

139 (x * y) * x' = x * (y / x).  [para(5(a,1),37(a,1,2,2)),rewrite([4(3)]),flip(a)].

140 (x' * y) * x = x' * (y / x').  [para(6(a,1),37(a,1,2,2)),rewrite([4(5)]),flip(a)].

142 (x / y) * ((z / (x / y)) * x) = ((x / y) * z) * y.  [para(10(a,1),37(a,1,2,2))].

143 (x / y) * (y * z) = y' * ((y * x) * z).  [para(37(a,1),11(a,1,2)),flip(a)].

144 (x' * y) * (x * z) = x' * ((y / x') * z).  [para(11(a,1),37(a,1,2,2)),flip(a)].

148 x' * ((x / ((x' * y') * (x / y))) * z) = (y / x) * ((x * y) * z).  [para(37(a,1),13(a,2,2)),rewrite([143(4),144(7),93(6),14(5),14(3),64(6

)])].

151 (x * y) * (x' * z) = x * ((y / x) * z).  [para(32(a,1),37(a,1,2,2)),flip(a)].

160 (x * (A * x)) / x = x * A.  [para(48(a,1),9(a,1,1))].

230 (x * x) / (A * x) = x * A'.  [para(49(a,1),9(a,1,1))].

238 (A * x) / (x * x) = x' * A.  [para(49(a,1),30(a,1,2)),rewrite([14(8),22(8)])].

239 ((A' * x) * A') * x = (A' * x) * (A' * x).  [para(32(a,1),49(a,1,2))].

249 (x * (y * (z * (z * (y * x))))) * u = x * (y * (z * (z * (y * (x * u))))).  [para(40(a,1),13(a,1,1,2)),rewrite([40(11)])].

386 (x * A) * (x / (x * A)) = x.  [para(48(a,1),139(a,1,1)),rewrite([14(6),151(8),9(3),5(4),4(2)]),flip(a)].

387 (A * (x / A)) * (A * (A * x)) = (A * x) * (A * x).  [para(139(a,1),49(a,1,1))].

402 x * ((x / A) / x) = x / A.  [para(10(a,1),386(a,1,1)),rewrite([10(6)])].

403 x / (x * A) = x' * (A' / x').  [para(386(a,1),11(a,1,2)),rewrite([14(3),140(5)]),flip(a)].

404 (x * (x * A)) * ((x * x) / (x * (x * A))) = x * x.  [para(12(a,1),386(a,1,1)),rewrite([12(7)])].

407 x' * (x / (x / A')) = A' / x.  [para(76(a,1),386(a,1,1)),rewrite([76(9),93(6),64(5)])].

422 x / (A / x') = x * (x' / A).  [para(402(a,1),32(a,1,2)),rewrite([93(9),64(8)]),flip(a)].

432 (x * (x * (x * x))) / (A * (x * x)) = x * (x * A').  [para(12(a,1),230(a,1,1)),rewrite([12(11)])].

472 x * (x * (A / x)) = x * A.  [para(238(a,1),139(a,2,2)),rewrite([12(4),14(6),151(8),160(4),139(4),12(9),32(8)])].

475 x * (A / x) = A.  [para(472(a,1),11(a,1,2)),rewrite([11(4)]),flip(a)].

487 A / x = x' * A.  [para(475(a,1),11(a,1,2)),flip(a)].

492 x' * ((x * A) * (y * (x * ((x' * A) * z)))) = (x' * ((x * A) * (y * A))) * z.  [para(475(a,1),42(a,1,1,2,2,2)),rewrite([487(2),144(7),487

(4),22(3),487(10),487(13),144(19),487(12),22(11)]),flip(a)].

497 x' * (A' / x') = x * (x' / A).  [back_rewrite(422),rewrite([487(3),22(2),403(3)])].

507 x / (x * A) = x * (x' / A).  [back_rewrite(403),rewrite([497(9)])].

511 x / A = x * A'.  [para(487(a,1),64(a,1,1)),rewrite([14(4),22(2)]),flip(a)].

515 x / A' = x * A.  [para(487(a,1),93(a,1)),rewrite([22(2)]),flip(a)].

520 x / (x * A) = A'.  [back_rewrite(507),rewrite([511(6),32(8)])].

535 (A * (x * A')) * (A * (A * x)) = (A * x) * (A * x).  [back_rewrite(387),rewrite([511(3)])].

538 A' / x = x' * A'.  [back_rewrite(407),rewrite([515(4),520(4)]),flip(a)].

552 (x * (A * y)) / y = y * ((y' * x) * A).  [para(32(a,1),51(a,1,1,1))].

569 (x * (y * (z * (y * (x * (A * x)))))) / x = x * ((y * (z * (y * x))) * A).  [para(42(a,1),51(a,1,1))].

571 (x * A') * A = x.  [para(511(a,1),10(a,1,1))].

577 A' * (x * A) = x.  [para(520(a,1),10(a,1,1))].

578 (x * x) / (x * (x * A)) = A'.  [para(12(a,1),520(a,1,2))].

580 (x * A) / x = A.  [para(520(a,1),64(a,1,1)),rewrite([22(3)]),flip(a)].

582 A' * x = x * A'.  [para(520(a,1),76(a,1,1)),rewrite([14(7),22(5)])].

589 A' * (x * (x * A)) = x * x.  [back_rewrite(404),rewrite([578(8),582(6,R)])].

593 (A' * (A' * x)) * x = (A' * x) * (A' * x).  [back_rewrite(239),rewrite([582(6,R)])].

596 A * x = x * A.  [para(580(a,1),10(a,1,1))].

605 A * (x * A') = x.  [back_rewrite(571),rewrite([596(5,R)])].

606 (x * (y * (z * (y * (x * (A * x)))))) / x = x * (A * (y * (z * (y * x)))).  [back_rewrite(569),rewrite([596(13,R)])].

609 (x * (A * y)) / y = y * (A * (y' * x)).  [back_rewrite(552),rewrite([596(8,R)])].

621 (A * c1) * (c2 * c1) != c1 * ((A * c2) * c1).  [back_rewrite(16),rewrite([596(3,R)])].

623 (A * x) * (A * x) = x * (A * (A * x)).  [back_rewrite(535),rewrite([605(5)]),flip(a)].

625 (x * A') * x = x * (x * A').  [para(3(a,1),53(a,1,1,1,2)),rewrite([511(2),4(5),3(7),511(6),605(8),3(7),511(6)])].

640 (x * A') * (A * (x / (x' * A))) = x * (x / (x' * A)).  [para(68(a,1),53(a,1,1)),rewrite([14(4),22(2)])].

672 x' * (A * x) = A.  [para(596(a,2),11(a,1,2))].

676 (x * (x * A)) * y = x * (A * (x * y)).  [para(596(a,1),13(a,1,1,2))].

678 (A * (A * x)) * y = A * (x * (A * y)).  [para(596(a,2),13(a,1,1,2))].

679 A * (x * (y * x)) = x * (y * (x * A)).  [para(596(a,2),13(a,1))].

680 A * (x * (y * x)) = x * (y * (A * x)).  [para(596(a,2),13(a,2,2,2)),rewrite([596(4,R)])].

685 x' * A = A * x'.  [para(596(a,2),29(a,2)),rewrite([29(2)])].

686 x * (A * x') = A.  [para(596(a,2),32(a,1,2))].

687 (A * (x * A)) / x = A * A.  [para(596(a,1),33(a,1,1,2))].

691 A' * (x * (y * (A * x))) = x * (y * x).  [para(596(a,2),36(a,1,1,2,2)),rewrite([511(6),582(7,R)])].

697 (A * (x * (A * x))) * y = A * (x * (x * (A * y))).  [para(596(a,2),40(a,1,1,2,2))].

708 (A * x) * x' = A.  [para(596(a,2),139(a,1,1)),rewrite([487(6),32(8)])].

710 (A' * x') * ((x * A) * y) = y.  [para(596(a,1),47(a,1,2,1))].

711 (x' * A') * ((A * x) * y) = y.  [para(596(a,2),47(a,1,2,1))].

723 A * (x * (A' * x)) = x * x.  [para(577(a,1),13(a,2,2)),rewrite([596(6,R)])].

724 A * (x * A) = x * (A * A).  [para(15(a,1),577(a,1,2)),rewrite([59(8),11(9)]),flip(a)].

730 x / (A * (x * A)) = A' * A'.  [para(577(a,1),85(a,1,1)),rewrite([22(3)])].

740 A * (A * x) = x * (A * A).  [para(605(a,1),15(a,2,1)),rewrite([596(6,R),605(6),596(4,R)])].

746 x / (A' * (x * A')) = A * A.  [para(605(a,1),85(a,1,1))].

754 x' * (A' * x) = A'.  [para(5(a,1),54(a,1,2,2)),rewrite([22(3),605(6),4(6)])].

768 x * (A * y) = x * (y * A).  [para(54(a,1),30(a,1,2)),rewrite([609(5),11(4),14(10),22(5),14(8),22(5),22(6)])].

769 (x' * (A' * (x * y'))) * (y * (A * x)) = x.  [para(32(a,1),54(a,1,2,1)),rewrite([14(4),22(3),582(6,R)])].

804 (A' * x') * (x * (A * A)) = A.  [para(605(a,1),54(a,1,2,1)),rewrite([14(6),22(6),582(8,R),577(8)])].

809 (A * x') * x = A.  [para(32(a,1),672(a,1,2)),rewrite([14(4),22(3)])].

812 (A * A) / x = A * (x' * A).  [para(672(a,1),36(a,1,1,2))].

829 x * ((A * x') / x) = A * x'.  [para(686(a,1),139(a,1,1)),flip(a)].

832 (A' * x') * x = A'.  [para(708(a,1),14(a,1,1)),rewrite([14(5),22(8)]),flip(a)].

841 x' * (A * A) = A * (A * x').  [para(809(a,1),12(a,2,2)),rewrite([623(7),40(8),6(5),4(5),596(10,R)])].

844 (A' * x) * x' = A'.  [para(809(a,1),14(a,1,1)),rewrite([14(6),22(6)]),flip(a)].

893 A' * (x * x) = x * (x * A').  [para(56(a,1),230(a,2)),rewrite([589(6),589(7),12(3),589(10),432(7),5(12),4(10)]),flip(a)].

911 (x * (x * A')) * y = x * (A' * (x * y)).  [para(582(a,1),13(a,1,1,2))].

913 (A' * (A' * x)) * y = A' * (x * (A' * y)).  [para(582(a,2),13(a,1,1,2))].

923 (A' * (x * (A' * x))) * y = A' * (x * (x * (A' * y))).  [para(582(a,2),40(a,1,1,2,2))].

931 (A' * (x * (y * (A' * x)))) * z = A' * (x * (y * (x * (A' * z)))).  [para(582(a,2),42(a,1,1,2,2,2))].

934 (A * x') * ((x * A') * y) = y.  [para(582(a,1),47(a,1,2,1)),rewrite([22(3)])].

936 (x' * y') * (A' * (x * y)) = A'.  [para(582(a,2),47(a,1,2))].

940 (A' * x) * (A' * x) = A' * (x * (A' * x)).  [back_rewrite(593),rewrite([913(7)]),flip(a)].

960 x * (x * (A * y)) = x * (x * (y * A)).  [para(57(a,1),9(a,1,1)),rewrite([609(8),14(4),12(8),11(7),11(5),12(4)])].

1004 A' * (A' * x) = x * (A' * A').  [para(577(a,1),57(a,2,1,2)),rewrite([596(8,R),11(9),577(5),32(16),582(12,R)]),flip(a)].

1019 (A' * A') / x = A' * (x' * A').  [para(754(a,1),36(a,1,1,2))].

1393 x / (A' * A') = A * (x * A).  [para(687(a,1),95(a,1,1)),rewrite([812(5),22(3),730(9)]),flip(a)].

1394 x / (A * A) = A' * (x * A').  [para(687(a,1),95(a,2,2)),rewrite([730(5),1019(7),22(4)]),flip(a)].

1439 x' * (A * (x * A)) = A * A.  [para(724(a,2),11(a,1,2))].

1440 A * (A * (x * x)) = x * (x * (A * A)).  [para(724(a,2),12(a,1)),rewrite([596(4,R)])].

1450 x' * (A * A) = A * (x' * A).  [para(724(a,2),29(a,2)),rewrite([29(4)])].

1452 x * (A * (x' * A)) = A * A.  [para(724(a,2),32(a,1,2))].

1468 (x * (A * A)) / x = A * A.  [para(724(a,1),85(a,1,1)),rewrite([577(9)])].

1679 (A' * x') * (x * A) = 0.  [para(768(a,1),6(a,1)),rewrite([14(3)])].

1680 (x' * A') * (A * x) = 0.  [para(768(a,2),6(a,1)),rewrite([14(3)])].

1681 (x * (y * A)) / (A * y) = x.  [para(768(a,1),9(a,1,1))].

1683 (x / (A * y)) * (y * A) = x.  [para(768(a,1),10(a,1))].

1684 (x / (y * A)) * (A * y) = x.  [para(768(a,2),10(a,1))].

1814 ((x' * y') * (A' * x')) * (x * (y * A)) = (x' * (y' * A')) * (x' / (x' * (y' * A'))).  [para(62(a,1),139(a,1,1)),rewrite([14(15),22(10),

14(13),22(10),22(11)])].

2008 x / (x * (A' * A')) = A * A.  [para(1468(a,1),93(a,1)),rewrite([14(9),22(5),14(7)]),flip(a)].

2024 (A * x) * (x' * A') = 0.  [para(1679(a,1),14(a,1,1)),rewrite([18(2),14(6),22(4),22(4),14(6)]),flip(a)].

2025 (A' * x) * (x' * A) = 0.  [para(22(a,1),1679(a,1,1,2))].

2028 ((x * A) * (A' * x')) * y = (x * A) * ((A' * x') * y).  [para(1679(a,1),40(a,1,1,2,2)),rewrite([4(8),710(22)])].

2043 (x * A) * (x * A') = x * x.  [para(1679(a,1),61(a,2,1,2)),rewrite([804(9),832(7),4(8),832(12),605(11)])].

2051 (x * A) * (A' * x') = 0.  [para(1680(a,1),14(a,1,1)),rewrite([18(2),14(6),22(3),22(4),14(6)]),flip(a)].

2055 (A * x) * ((x' * A') * y) = y.  [para(1680(a,1),40(a,1,1,2,2)),rewrite([4(8),2024(7),3(2),711(14)]),flip(a)].

2063 (x * A) * ((A' * x') * y) = y.  [back_rewrite(2028),rewrite([2051(7),3(2)]),flip(a)].

2099 x / (A * y) = x / (y * A).  [para(10(a,1),1681(a,1,1))].

2166 x / (x' * y) = x * (y' * x).  [para(6(a,1),66(a,1,2,2,2)),rewrite([4(3),22(5),22(6)])].

2168 x' * (((x * y) / z) * x') = y / (x * z).  [para(10(a,1),66(a,1,2,2)),rewrite([64(6)]),flip(a)].

2205 x' * ((A' * (x * y)) * x') = y / (x * A).  [para(809(a,1),66(a,1,2,2)),rewrite([14(7),14(10),14(10),22(8),22(8)]),flip(a)].

2246 (x * A') * (x * x) = x * (x * (A' * x)).  [back_rewrite(640),rewrite([2166(8),723(9),2166(9)])].

2258 (A * x) / y = (x * A) / y.  [para(1683(a,1),30(a,1,2)),rewrite([64(7)]),flip(a)].

2261 x * ((y / (A * x)) * x) = A' * (x * y).  [para(1683(a,1),36(a,1,1,2)),rewrite([511(3),582(4,R)]),flip(a)].

2280 (x / (y * (A * A))) * (A * (y * A)) = x.  [para(724(a,1),1683(a,1,1,2)),rewrite([596(9,R)])].

2298 A * (A * (x / (y * A))) = (A * x) / y.  [para(1684(a,1),36(a,1,1,2)),rewrite([596(9,R)]),flip(a)].

2325 (A * x') * (x * A') = 0.  [para(22(a,1),2024(a,1,2,1))].

2327 A' * (x' * ((A * x) * (y * A))) = x' * ((A * x) * y).  [para(2024(a,1),42(a,2,2,2,2)),rewrite([708(7),582(10,R),4(15)])].

2339 (A' * x) * ((A' * x) * y) = A' * (x * (x * (A' * y))).  [para(2025(a,1),58(a,2,2,1)),rewrite([844(8),32(10),940(7),923(8),3(17)]),flip(a

)].

2340 ((A' * x) * (((A' * x) * y) * x)) * (x' * A) = A' * (x * (x * y)).  [para(2025(a,1),58(a,2,2,2)),rewrite([32(12),4(24),2339(23),577(20)]

)].

2450 x / (A * (y * y)) = x / (y * (y * A)).  [para(12(a,1),2099(a,2,2))].

2498 x / (A * (A * y)) = x / (y * (A * A)).  [para(740(a,1),2099(a,1,2)),rewrite([596(9,R)]),flip(a)].

2509 (x * A) / y' = y / (A' * x').  [para(2258(a,1),93(a,1)),rewrite([14(7)])].

2533 (A * (A * x)) / y = (x * (A * A)) / y.  [para(740(a,1),2258(a,1,1)),rewrite([596(9,R)]),flip(a)].

2541 (x * (y * z)) * ((x' * (y' * z')) * u) = u.  [para(14(a,1),70(a,1,2,1,2))].

2571 A' * (x * ((A * x') * (y * A))) = x * ((A * x') * y).  [para(2325(a,1),42(a,2,2,2,2)),rewrite([809(7),582(10,R),4(15)])].

2633 (x / y) * (x' * z) = x * ((x' * y') * z).  [para(74(a,1),11(a,1,2)),rewrite([22(2)]),flip(a)].

2996 (A * x') * (x * A) = A * A.  [para(812(a,1),1683(a,1,1)),rewrite([14(4),596(7,R),32(7)])].

3320 x' * (A' * (x * A')) = A' * A'.  [para(1452(a,1),14(a,1,1)),rewrite([14(4),14(12),14(12),22(10)]),flip(a)].

3454 (x * A) * (A' * x) = x * x.  [para(15(a,1),2043(a,1,2)),rewrite([577(5),5(9),4(7),577(11),577(11)])].

3536 (A * x) * (x' * A) = A * A.  [para(22(a,1),2996(a,1,1,2))].

3594 (x' * A) / y' = y / (A' * x).  [para(582(a,2),91(a,2,2)),rewrite([22(4)])].

3748 (A' * x) / (x * x) = x' * A'.  [para(3454(a,1),30(a,1,2)),rewrite([14(8)])].

3984 (A' * x) * y = (x * A') * y.  [para(582(a,2),100(a,2,1)),rewrite([511(3),144(6),538(5),22(3),32(7)]),flip(a)].

4279 (A * x) * y = (x * A) * y.  [para(710(a,1),11(a,1,2)),rewrite([14(5),22(3),22(3)])].

4382 (A * x) * (A * y) = (x * A) * (y * A).  [para(4279(a,1),768(a,2))].

4741 x / (A' * x') = x * (A * x).  [para(829(a,1),32(a,1,2)),rewrite([22(3),22(6),93(7),14(6)]),flip(a)].

4761 x' / (A * x) = x' * (x' * A').  [para(829(a,1),711(a,1,2)),rewrite([14(8),32(10),625(6),14(10),32(12)]),flip(a)].

4770 (A' * x') / x = x' * (A' * x').  [para(582(a,2),107(a,1,1))].

4958 (x * A') * (y * (x * A')) = A' * ((x * A') * (y * x)).  [para(109(a,1),511(a,1)),rewrite([511(2),511(5),511(10),582(16,R)])].

5138 (A' * (x * x)) / (x * A') = x.  [para(893(a,2),9(a,1,1))].

5151 (x * A') * (A' * (x * x)) = A' * (x * (x * (A' * x))).  [para(893(a,2),36(a,2,2)),rewrite([36(10),4958(8),2246(7)]),flip(a)].

5266 (x / (y * z)) * y = y' * ((y * x) / z).  [para(110(a,1),11(a,1,2)),flip(a)].

5274 (x * y) / (x' * z) = x * ((y / z) * x).  [para(32(a,1),110(a,1,2,1,2)),flip(a)].

5276 (x * y) * (x * y) = x * (y * (y * x)).  [para(78(a,1),110(a,2)),rewrite([14(2),32(4),78(2),12(2)]),flip(a)].

5288 ((x * y) / z) * x' = x * (y / (x * z)).  [para(110(a,1),139(a,1,1)),rewrite([5266(7),107(9),2168(10)])].

5293 A * (A * (x / (A * y))) = (A * x) / y.  [para(110(a,1),596(a,1)),rewrite([596(8,R),596(10,R)]),flip(a)].

5295 (A * x) / (y * A') = A * (A * (x / y)).  [para(605(a,1),110(a,1,2,1,2)),rewrite([596(4,R)]),flip(a)].

5347 (x * (A * y)) / z = (x * (y * A)) / z.  [para(768(a,1),110(a,2,1)),rewrite([5266(5),32(7)])].

5424 (A' * x) / (x * A') = 0.  [para(746(a,1),110(a,1,2,1)),rewrite([582(8,R),724(8,R),596(7,R),5(7),4(5),596(4,R),5(4)]),flip(a)].

5780 (x * A') / (A' * x) = 0.  [para(5424(a,1),64(a,1,1)),rewrite([18(2)]),flip(a)].

5784 (x * (A' * y)) / (y * A') = x.  [para(5424(a,1),109(a,1,1,1)),rewrite([3(6),5424(15),5424(16),4(11),3(10)])].

5790 (x * (y * A')) / (A' * y) = x.  [para(5780(a,1),109(a,1,1,1)),rewrite([3(6),5780(15),5780(16),4(11),3(10)])].

6116 A * ((x * y) * ((x' * (y' * A')) * (A * (x * y)))) = (A * ((x * y) * x)) / x.  [para(54(a,1),115(a,1,1,2,2)),rewrite([596(16,R)]),flip(a

)].

6224 A' * (x * ((A * x') * (y * (A * A)))) = x * ((A * x') * (y * A)).  [para(2996(a,1),115(a,1,1,2,2,2)),rewrite([511(11),582(12,R),809(19)]

)].

6236 A' * (x' * ((A * x) * (y * (A * A)))) = x' * ((A * x) * (y * A)).  [para(3536(a,1),115(a,1,1,2,2,2)),rewrite([511(11),582(12,R),708(19)]

)].

6319 A * (A * (x * (A' * A'))) = x.  [para(1393(a,1),9(a,1)),rewrite([596(9,R)])].

6359 (x * (y * A)) / x = x' / (x' * (y' * A')).  [para(6(a,1),116(a,1,1,2)),rewrite([4(5),14(12),14(9),14(13),1814(19),2541(23)])].

6648 A' * (x * A') = x * (A' * A').  [para(1450(a,1),14(a,1,1)),rewrite([14(6),14(6),22(4),22(8),14(10)])].

7106 ((x' * y') / z) * x = x' * ((x * z') / y).  [para(122(a,1),11(a,1,2)),flip(a)].

7272 x * (A * (A * (x * ((A' * x') * y)))) = (x * A) * y.  [para(2063(a,1),12(a,2,2)),rewrite([5276(5),40(11)])].

7362 (x' * (A * A)) / y' = y / (A' * (A' * x)).  [para(841(a,2),123(a,1,1)),rewrite([14(13),22(13)])].

9114 (A' * x) * (y * A) = A' * ((x * A) * y).  [para(520(a,1),142(a,1,1)),rewrite([520(5),515(5),520(9)]),flip(a)].

9259 (x * A') * ((A' * x) * y) = A' * (x * (x * (A' * y))).  [para(3984(a,1),12(a,2)),rewrite([5276(7),40(8)]),flip(a)].

9295 ((A' * x) * y) * (x' * A) = (x * A') * (y / (x * A')).  [para(3984(a,2),139(a,1,1)),rewrite([14(8),22(8)])].

9348 (x * A') * (A * y) = A' * ((x * A) * y).  [para(3984(a,1),768(a,1)),rewrite([9114(12)])].

9349 (x * A') * (y * A) = A' * ((x * A) * y).  [para(3984(a,1),768(a,2)),rewrite([144(6),515(5)]),flip(a)].

9446 (x * A') * ((((A' * x) * y) * x) / (x * A')) = A' * (x * (x * y)).  [back_rewrite(2340),rewrite([9295(13)])].

9651 (x / (y * y)) * (y * (y * z)) = y' * (y' * ((y * (y * x)) * z)).  [para(12(a,1),143(a,1,2)),rewrite([14(7),12(10),12(12)])].

9680 (x * A) * (A' * y) = A * ((A' * x) * y).  [para(515(a,1),143(a,1,1)),rewrite([22(9)])].

9681 (x / y) * (A * y) = y' * (A * (y * x)).  [para(596(a,2),143(a,1,2)),rewrite([596(8,R)])].

9689 x' * (A' * (x' * ((A * x) * y))) = A' * ((x' * A) * y).  [para(708(a,1),143(a,2,2,1)),rewrite([4761(4),911(10),14(13),144(17),515(16)])]

.

10051 (A * x') * (x * y) = x' * ((x * A) * y).  [para(596(a,2),144(a,1,1)),rewrite([487(9),22(8)])].

10060 (x * y) * (A * x') = x * (A * (y / x)).  [para(685(a,1),144(a,1,2)),rewrite([22(2),22(7),22(7),596(8,R)])].

10733 (((A' * x) * y) * x) / (x * A') = A' * ((x * A) * y).  [para(15(a,1),5784(a,1,1)),rewrite([32(9),9114(15)])].

10750 (x * A') * (A' * ((x * A) * y)) = A' * (x * (x * y)).  [back_rewrite(9446),rewrite([10733(12)])].

10864 A * (x * (A' * A')) = A' * x.  [para(6319(a,1),11(a,1,2)),flip(a)].

10950 (x' * A) * ((x * A) * y) = x' * (A * (x * (A * y))).  [para(487(a,1),148(a,2,1)),rewrite([511(7),144(9),538(6),22(4),582(8,R),3320(9),1

393(7),13(6)]),flip(a)].

10956 (x' * A) * ((A * x) * y) = x' * (A * (x * (A * y))).  [para(596(a,2),148(a,2,2,1)),rewrite([511(7),144(9),538(6),22(4),582(8,R),3320(9)

,1393(7),13(6),487(9)]),flip(a)].

10979 (A * x) * ((x * A') * y) = x * (A * (x * (A' * y))).  [para(832(a,1),148(a,2,2,1)),rewrite([14(5),22(3),22(3),14(11),22(9),22(9),708(10

),4770(12),723(14),3748(10),22(4),4741(12),13(14)])].

11482 A' * (x * (x * (x * (A' * ((x' * A) * y))))) = (x * A') * (x * y).  [para(5138(a,1),151(a,2,2,1)),rewrite([5151(8),14(12),22(12),931(13

)])].

18983 (x * y) * ((x' * z) * (A * (x * y))) = A * (x * ((y / x) * ((z / x') * y))).  [para(144(a,1),679(a,1,2,2)),rewrite([151(8),596(14,R)]),

flip(a)].

18985 (A * (x * (y * x))) * (x' * z) = x * (((y * (x * A)) / x) * z).  [para(679(a,2),151(a,1,1))].

19078 (A * ((x * y) * x)) / x = A * (A * (x * (y * A'))).  [back_rewrite(6116),rewrite([18983(13),7106(10),22(6),511(7),582(8,R),2633(10),936

(10)]),flip(a)].

19224 (x * (A * (x' * y))) * (x * z) = x' * ((A * (x * (y * x))) * z).  [para(680(a,2),143(a,2,2,1)),rewrite([609(4)])].

19231 x * (((y * (x * A)) / x) * z) = x * ((x * (A * (x' * y))) * z).  [para(680(a,2),151(a,1,1)),rewrite([18985(7),609(10)])].

19272 (A * (x * (y * x))) * (x' * z) = x * ((x * (A * (x' * y))) * z).  [back_rewrite(18985),rewrite([19231(13)])].

19774 A * (x' * ((x * A') * (x * y))) = A' * ((x * A) * y).  [para(960(a,1),934(a,1,2)),rewrite([9349(12),10750(13),151(9),511(4),144(8),538(

6),22(4),9348(15)])].

20679 x' * (A * (x * (x * (A * y)))) = A * (A * (x * y)).  [para(1440(a,2),143(a,2,2,1)),rewrite([6359(5),2008(9),12(5),678(12),12(11)]),flip

(a)].

22244 x * (A * ((y / (x * (A * A))) * (A * x))) = A' * (x * (A * y)).  [para(2280(a,1),115(a,1,1,2,2)),rewrite([511(5),582(6,R)]),flip(a)].

24873 (A * (A * x)) / (y * A) = (x * (A * A)) / (A * y).  [para(2533(a,1),2099(a,1)),flip(a)].

26074 (x / (A * y)) * (A * z) = A' * (((A * x) / y) * z).  [para(5293(a,1),143(a,2,2,1)),rewrite([511(7),582(8,R),11(8)])].

26436 (x * (A * y)) / (x * (y * A)) = 0.  [para(5347(a,2),23(a,1))].

26743 (x * (y * (A * z))) / (y * (z * A)) = x.  [para(26436(a,1),109(a,1,1,1)),rewrite([3(6),26436(15),26436(16),4(11),3(10)])].

38534 (x * (y * A)) / y = y * (A * (y' * x)).  [para(596(a,1),609(a,1,1,2))].

38565 A' * (x' * (A * (x * (A * y)))) = (x * A) / (y' * x).  [para(609(a,1),2509(a,2)),rewrite([32(8),14(5),22(5),14(15),22(13),22(13),144(15

),515(11),10956(14)]),flip(a)].

39668 (x / (A * y)) * y = y' * (A' * (y * x)).  [para(2261(a,1),11(a,1,2)),flip(a)].

39670 (A' * (x * y)) * x' = x * (y / (x * A)).  [para(2261(a,1),139(a,1,1)),rewrite([39668(10),107(13),2205(14)])].

39677 (x / (y * A)) * (y * z) = y' * ((A' * (y * x)) * z).  [para(2261(a,1),143(a,2,2,1)),rewrite([39668(4),107(7),39670(7),11(6)])].

43730 A' * (x / (A' * y)) = A * ((A' * x) / y).  [para(5266(a,1),230(a,2)),rewrite([230(16),582(7,R),22(10)])].

43817 (A * (x * y)) * x' = x * (y / (A' * x)).  [para(3594(a,1),5266(a,2,2)),rewrite([487(5),14(4),22(2),22(2),596(3,R),22(7)])].

43827 A * ((x * (A' * A')) / (A * y)) = A' * ((A' * x) / y).  [para(10864(a,1),5266(a,2,2,1)),rewrite([596(11,R)])].

43838 (x / (A' * (A' * y))) * y = y' * (A * (A * (y * x))).  [para(1004(a,2),5266(a,1,1,2)),rewrite([1393(16),596(13,R)])].

43883 A * ((A' * (x * A')) / y) = A * ((x * (A' * A')) / y).  [para(6648(a,1),5266(a,2,2,1)),rewrite([582(10,R),43730(10),22(12)])].

44115 A' * (x' * ((x * A) * (y * A))) = x' * ((x * A) * y).  [para(582(a,2),492(a,1,2,2,2,2)),rewrite([577(9),5(5),4(5),582(15,R)]),flip(a)].

46239 (x * A) / (y' * x) = x' * (A * (x * y)).  [para(724(a,1),9681(a,1,2)),rewrite([39677(8),724(9,R),596(8,R),32(8),14(8),9348(15),10950(14

),38565(15)]),flip(a)].

46263 (A * x) * (A * ((A' * x') * y)) = x * (A * (x' * y)).  [para(2509(a,2),9681(a,1,1)),rewrite([32(10),5288(6),487(4),14(3),22(3),596(4,R)

,14(10),22(8),22(8)]),flip(a)].

46277 A' * (x' * (A * (A * (x * y)))) = (A * (x' / y')) * x.  [para(2450(a,2),9681(a,1,1)),rewrite([26074(10),9651(10),596(10,R),20679(11),14

(14),14(14),676(21),911(23),38565(22),14(15),140(17),5274(19),487(16),64(15),596(16,R),11(19)])].

46287 x * (A * (x' * (y / x))) = y / (A' * x).  [para(9681(a,1),609(a,1,1)),rewrite([107(6),43817(6),11(7)]),flip(a)].

46290 A' * (x' * (A * (x * (A * y)))) = x' * (A * (x * y)).  [back_rewrite(38565),rewrite([46239(15)])].

46401 x' * (A * (x * (x * y))) = x * ((A * (y / x)) * x).  [para(10060(a,1),609(a,1,1)),rewrite([93(6),14(5),14(5),64(5),2166(7),14(5),22(3),

64(3),22(9)]),flip(a)].

46422 (A * x) * (A * ((x' * A') * y)) = x * (A * (x' * y)).  [para(711(a,1),606(a,1,1,2,2,2)),rewrite([2055(13),609(8),14(6),46263(10),9348(1

9),140(18),487(18),22(17),11(18),596(16,R),5(16),4(14)]),flip(a)].

50580 x / (y * (x * A)) = x' * (A' * (x * y')).  [para(769(a,1),26743(a,1,1))].

50958 x * (A * (x' * (y / (x * A)))) = y / x.  [para(10(a,1),38534(a,1,1)),flip(a)].

52078 x * (A * (x' * (y / (A * x)))) = y / x.  [para(596(a,2),50958(a,1,2,2,2,2))].

52094 x' * (A * (x * (y / x))) = (A * y) / x.  [para(50958(a,1),249(a,2,2,2,2)),rewrite([686(6),1439(6),12(7),2298(7)]),flip(a)].

52101 A * (x * (y / x)) = x * ((A * y) / x).  [para(50958(a,1),697(a,2,2,2)),rewrite([19272(11),1452(6),12(7),2298(7)]),flip(a)].

52280 x * ((A * (y * x)) / x) = A * (x * y).  [para(9(a,1),52101(a,1,2,2)),flip(a)].

52599 (A * (x * y)) / y = y' * (A * (y * x)).  [para(52280(a,1),11(a,1,2)),flip(a)].

52604 x / (A' * (y' * x)) = x * (A * (x' * y)).  [para(52280(a,1),32(a,1,2)),rewrite([93(11),14(10),14(10),22(10)]),flip(a)].

52609 A * (A * (x' * (A' * (x * y)))) = x * (A * (x' * y)).  [para(52280(a,1),2055(a,1,2)),rewrite([46422(10),5295(17),93(14),14(13),14(13),2

2(10),22(11),50580(12),22(12)]),flip(a)].

52698 x' * (A * (x * (A * y))) = x * (A * (A * (x' * y))).  [para(52280(a,1),38534(a,2,2,2)),rewrite([93(6),14(5),14(5),22(5),52604(6),19224(

8),596(7,R),107(9),678(9),10060(8),9(5)])].

52715 A * (A * (x * (y * A'))) = x * ((A * (y / x)) * x).  [back_rewrite(19078),rewrite([52599(5),46401(6)]),flip(a)].

52718 A' * (x * (A * (A * (x' * y)))) = x' * (A * (x * y)).  [back_rewrite(46290),rewrite([52698(9)])].

52720 (x' * A) * ((A * x) * y) = x * (A * (A * (x' * y))).  [back_rewrite(10956),rewrite([52698(14)])].

53093 A * (x' * (y / (A * x))) = x' * (y / x).  [para(52078(a,1),11(a,1,2)),flip(a)].

53131 (A * x) / (y * A) = A * ((A' * x) / y).  [para(2099(a,1),52094(a,2)),rewrite([14(3),144(13),515(6),52720(12),53093(10),46287(8),43730(7

)]),flip(a)].

53220 (x * (A * A)) / (A * y) = A * (x / y).  [back_rewrite(24873),rewrite([53131(7),11(6)]),flip(a)].

53407 (A * (x / y)) * (A * y) = x * (A * A).  [para(53220(a,1),10(a,1,1))].

53408 A * ((A' * (x * A')) / y) = x / (A * y).  [para(10(a,1),53220(a,1,1)),rewrite([1394(8)]),flip(a)].

53410 (x * (A * A)) / y = A * (x / (A' * y)).  [para(32(a,1),53220(a,1,2))].

53589 A * ((x * (A' * A')) / y) = x / (A * y).  [back_rewrite(43883),rewrite([53408(9)]),flip(a)].

53703 x / (A' * (A' * y)) = A * (y' / (A' * x')).  [back_rewrite(7362),rewrite([53410(7)]),flip(a)].

53749 x / (A * (A * y)) = A' * ((A' * x) / y).  [back_rewrite(43827),rewrite([53589(11)])].

53800 (A * (x' / (A' * y'))) * x = x' * (A * (A * (x * y))).  [back_rewrite(43838),rewrite([53703(7)])].

53917 x / (y * (A * A)) = A' * ((A' * x) / y).  [back_rewrite(2498),rewrite([53749(5)]),flip(a)].

53930 x * ((A * ((A' * y) / x)) * x) = A' * (x * (A * y)).  [back_rewrite(22244),rewrite([53917(6),144(11),93(10),64(9),487(9),64(8),596(9,R)

,32(12)])].

53970 (A * x) * (A * y) = A * (A * (x * y)).  [para(9(a,1),53407(a,1,1,2)),rewrite([724(10,R),596(9,R)])].

53976 (A * x) * (y * (A * A)) = A * (A * (x * (A * y))).  [para(53407(a,1),36(a,2,2)),rewrite([36(11),53970(8),10(6),53970(7)]),flip(a)].

53981 A * (A * (x * (A' * y))) = (A * x) * y.  [para(5784(a,1),53407(a,1,1,2)),rewrite([605(7),724(11,R),596(10,R)]),flip(a)].

53982 A * (A * (x * (y * A'))) = (A * x) * y.  [para(5790(a,1),53407(a,1,1,2)),rewrite([32(7),724(11,R),596(10,R)]),flip(a)].

54055 A * (A * (x * ((A' * x') * y))) = x * (A * (x' * y)).  [back_rewrite(46263),rewrite([53970(10)])].

54115 (x * A) * (y * A) = A * (A * (x * y)).  [back_rewrite(4382),rewrite([53970(5)]),flip(a)].

54130 x' * ((A * x) * (y * A)) = x' * (A * (A * (x * y))).  [back_rewrite(6236),rewrite([53976(10),46277(12),14(5),53800(9)]),flip(a)].

54131 x * ((A * x') * (y * A)) = x * (A * (A * (x' * y))).  [back_rewrite(6224),rewrite([53976(10),52718(12),52698(7)]),flip(a)].

54135 x' * ((x * A) * y) = x * (A * (x' * y)).  [back_rewrite(52609),rewrite([53981(10),10051(5)])].

54137 x * ((A * (y / x)) * x) = (A * x) * y.  [back_rewrite(52715),rewrite([53982(8)]),flip(a)].

54143 x * (x * (A * (x' * y))) = (x * A) * y.  [back_rewrite(7272),rewrite([54055(10)])].

54153 (A * (x' / y')) * x = x * (A * (x' * y)).  [back_rewrite(44115),rewrite([54115(8),46277(10),54135(11)])].

54181 x' * ((A * x) * y) = x * (A * (x' * y)).  [back_rewrite(2327),rewrite([54130(9),46277(10),54153(6)]),flip(a)].

54185 x' * (A * (x * y)) = x * ((A * x') * y).  [back_rewrite(2571),rewrite([54131(9),52718(10)])].

54205 A' * (x * (A * y)) = A * ((x * A') * y).  [back_rewrite(53930),rewrite([54137(8),151(6),511(3)]),flip(a)].

54242 A' * ((x' * A) * y) = A * (x' * (A' * y)).  [back_rewrite(9689),rewrite([54181(8),54205(9),151(8),538(5),54185(10),10979(9),32(10)]),fl

ip(a)].

54426 (x * A') * (x * y) = x * (x * (A' * y)).  [back_rewrite(11482),rewrite([54242(9),54143(11),9680(8),54205(10),9259(9),32(10)]),flip(a)].

54515 A' * ((x * A) * y) = A * (x * (A' * y)).  [back_rewrite(19774),rewrite([54426(7),11(8)]),flip(a)].

54569 (x * A') * (A * y) = A * (x * (A' * y)).  [back_rewrite(9348),rewrite([54515(12)])].

54648 (A * x) * (y * x) = x * ((A * y) * x).  [para(53970(a,1),691(a,1,2,2)),rewrite([54205(9),54569(8),53981(9)])].

54649 $F.  [resolve(54648,a,621,a)].

 

============================== end of proof ==========================

 

% Proof 1 at 11.85 (+ 0.08) seconds.

% Length of proof is 184.

% Level of proof is 27.

% Maximum clause weight is 31.000.

% Given clauses 720.

 

1 (z * (x * A)) * z = (z * x) * (A * z) # label(non_clause) # label(goal).  [goal].

2 0 * x = x.  [assumption].

3 x * 0 = x.  [assumption].

4 x * x' = 0.  [assumption].

5 x' * x = 0.  [assumption].

6 x * (x \ y) = y.  [assumption].

7 x \ (x * y) = y.  [assumption].

8 (x * y) / y = x.  [assumption].

9 (x / y) * y = x.  [assumption].

10 x' * (x * y) = y.  [assumption].

11 (x * x) * y = x * (x * y).  [assumption].

12 (x * (y * x)) * z = x * (y * (x * z)).  [assumption].

13 (x * y)' = x' * y'.  [assumption].

14 A * ((x * y) * A) = (A * x) * (y * A).  [assumption].

15 (A * x) * (y * A) = A * ((x * y) * A).  [copy(14),flip(a)].

16 (c1 * (c2 * A)) * c1 != (c1 * c2) * (A * c1).  [deny(1)].

20 x \ 0 = x'.  [para(4(a,1),7(a,1,2))].

21 x'' = x.  [para(5(a,1),7(a,1,2)),rewrite([20(3)])].

22 x / x = 0.  [para(2(a,1),8(a,1,1))].

28 x \ y = x' * y.  [para(6(a,1),10(a,1,2)),flip(a)].

29 x / (y * x) = y'.  [para(10(a,1),8(a,1,1))].

31 x * (x' * y) = y.  [back_rewrite(6),rewrite([28(1)])].

32 (x * (x * y)) / y = x * x.  [para(11(a,1),8(a,1,1))].

35 (x * (y * (x * z))) / z = x * (y * x).  [para(12(a,1),8(a,1,1))].

36 x * ((y / x) * (x * z)) = (x * y) * z.  [para(9(a,1),12(a,1,1,2)),flip(a)].

39 (x * (y * (y * x))) * z = x * (y * (y * (x * z))).  [para(11(a,1),12(a,1,1,2)),rewrite([11(7)])].

41 (x * (y * (z * (y * x)))) * u = x * (y * (z * (y * (x * u)))).  [para(12(a,1),12(a,1,1,2)),rewrite([12(9)])].

43 (x * y) * (x' * y') = 0.  [para(13(a,1),4(a,1,2))].

45 (x / y)' * y' = x'.  [para(9(a,1),13(a,1,1)),flip(a)].

46 (x' * y') * ((x * y) * z) = z.  [para(13(a,1),10(a,1,1))].

47 (A * x) * A = A * (x * A).  [para(2(a,1),15(a,1,2)),rewrite([3(7)])].

48 A * ((A' * x) * A) = x * A.  [para(4(a,1),15(a,1,1)),rewrite([2(4)]),flip(a)].

50 (A * ((x * y) * A)) / (y * A) = A * x.  [para(15(a,1),8(a,1,1))].

59 (x / y)' = y / x.  [para(9(a,1),29(a,1,2)),flip(a)].

60 x / (y * (y * x)) = y' * y'.  [para(11(a,1),29(a,1,2)),rewrite([13(5)])].

63 (x / y) * x' = y'.  [back_rewrite(45),rewrite([59(2)])].

66 A * (((A' * x) * y) * A) = x * (y * A).  [para(31(a,1),15(a,1,1)),flip(a)].

68 (x / y) * (y / x) = 0.  [para(59(a,1),4(a,1,2))].

70 x' / y' = y / x.  [para(63(a,1),8(a,1,1))].

72 ((x * y) / z) * (x' * y') = z'.  [para(13(a,1),63(a,1,2))].

75 x / x' = x * x.  [para(4(a,1),32(a,1,1,2)),rewrite([3(2)])].

83 (x * y) / (x' * y) = x * x.  [para(31(a,1),32(a,1,1,2))].

91 x / y' = y / x'.  [para(21(a,1),70(a,1,1))].

104 (x' * y) / x = x' * (y * x').  [para(5(a,1),35(a,1,1,2,2)),rewrite([3(3)])].

106 ((x / y) * (z * x)) / y = (x / y) * (z * (x / y)).  [para(9(a,1),35(a,1,1,2,2))].

107 x * ((y / (x * z)) * x) = (x * y) / z.  [para(9(a,1),35(a,1,1,2)),flip(a)].

114 (x * (A * ((y * x) * A))) / A = x * ((A * y) * x).  [para(15(a,1),35(a,1,1,2))].

120 (x * y) / z' = z / (x' * y').  [para(13(a,1),91(a,1,2)),flip(a)].

122 (x' / y) * (x / y') = 0.  [para(91(a,1),68(a,1,2))].

133 ((x * y) * z) / (x' * y') = (x * y) * (z * (x * y)).  [para(43(a,1),35(a,1,1,2,2)),rewrite([3(3)])].

135 (x * y) * x' = x * (y / x).  [para(4(a,1),36(a,1,2,2)),rewrite([3(3)]),flip(a)].

136 (x' * y) * x = x' * (y / x').  [para(5(a,1),36(a,1,2,2)),rewrite([3(5)]),flip(a)].

138 (x / y) * ((z / (x / y)) * x) = ((x / y) * z) * y.  [para(9(a,1),36(a,1,2,2))].

139 (x / y) * (y * z) = y' * ((y * x) * z).  [para(36(a,1),10(a,1,2)),flip(a)].

140 (x' * y) * (x * z) = x' * ((y / x') * z).  [para(10(a,1),36(a,1,2,2)),flip(a)].

144 x' * ((x / ((x' * y') * (x / y))) * z) = (y / x) * ((x * y) * z).  [para(36(a,1),12(a,2,2)),rewrite([139(4),140(7),91(6),13(5),13(3),59(6

)])].

147 (x * y) * (x' * z) = x * ((y / x) * z).  [para(31(a,1),36(a,1,2,2)),flip(a)].

152 x / A' = x * A.  [back_rewrite(48),rewrite([136(6),31(8)])].

158 (x * A') * A = x.  [para(152(a,1),8(a,1))].

159 (x * A) * A' = x.  [para(152(a,1),9(a,1,1))].

163 A' / x = x' * A'.  [para(152(a,1),59(a,1,1)),rewrite([13(3)]),flip(a)].

165 (x * (x * A')) * A = x * x.  [para(152(a,1),32(a,1))].

166 A / x = x' * A.  [para(152(a,1),70(a,1)),flip(a)].

169 x / A = x * A'.  [para(158(a,1),8(a,1,1))].

171 A * ((x * (y * A')) * A) = (A * x) * y.  [para(158(a,1),15(a,1,2)),flip(a)].

172 ((x * A') * x) * A' = (x * A') * (x * A').  [para(158(a,1),32(a,1,1,2)),rewrite([169(6)])].

173 ((x * A') * (y * x)) * A' = (x * A') * (y * (x * A')).  [para(158(a,1),35(a,1,1,2,2)),rewrite([169(7)])].

175 (x * (A * ((y * x) * A))) * A' = x * ((A * y) * x).  [back_rewrite(114),rewrite([169(8)])].

177 (x * (x * A)) * A' = x * x.  [para(11(a,1),159(a,1,1))].

227 (x * (y * (z * (z * (y * x))))) * u = x * (y * (z * (z * (y * (x * u))))).  [para(39(a,1),12(a,1,1,2)),rewrite([39(11)])].

279 (x * (y * (z * (u * (z * (y * x)))))) * w = x * (y * (z * (u * (z * (y * (x * w)))))).  [para(41(a,1),12(a,1,1,2)),rewrite([41(13)])].

296 (x * (y * (z * (u * (z * (y * (x * w))))))) / w = x * (y * (z * (u * (z * (y * x))))).  [para(41(a,1),35(a,1,1,2)),rewrite([41(13)])].

391 x / (x' * (x / y)) = x * y.  [para(135(a,1),8(a,1,1)),rewrite([91(4),13(3),59(3)])].

392 (x / y) * (y / (x / y)) = x * (y / x).  [para(9(a,1),135(a,1,1)),rewrite([59(2)]),flip(a)].

421 (A * x) * x = A * (x * x).  [para(165(a,1),15(a,2,2)),rewrite([158(7)])].

431 (A * (x * x)) / x = A * x.  [para(421(a,1),8(a,1,1))].

458 (A * A) / (x * A) = A * x'.  [para(5(a,1),50(a,1,1,2,1)),rewrite([2(4)])].

469 (A * (A * (x * (A * A)))) / (A * A) = A * (A * x).  [para(47(a,1),50(a,1,1,2,1)),rewrite([12(7)])].

479 (A * (x * (x * A))) / (A * A) = A * (x * (x * A')).  [para(165(a,1),50(a,1,1,2,1)),rewrite([11(4)])].

503 (A' * (x * A)) * A' = A' * x.  [para(391(a,1),163(a,1)),rewrite([21(6),163(7),13(10),13(10),21(7),21(8)]),flip(a)].

512 (A * x) / (A' * (x' * A)) = A * (x * x).  [para(421(a,1),391(a,2)),rewrite([13(5),8(9),136(8),152(8)])].

514 (A * A) / x = A * (x' * A).  [para(9(a,1),458(a,1,2)),rewrite([169(7),13(9),21(9)])].

527 A * (x' * A') = x'.  [para(514(a,1),29(a,1)),rewrite([13(6),13(6),171(11),135(6),169(4)])].

528 x / (A * A) = A' * (x * A').  [para(514(a,1),59(a,1,1)),rewrite([13(6),13(6),21(4)]),flip(a)].

530 x / (A' * A') = A * (x * A).  [para(514(a,1),91(a,1)),rewrite([21(3),13(8)]),flip(a)].

541 A * (x * (x * A')) = x * x.  [back_rewrite(479),rewrite([528(9),135(10),169(8),177(9),10(6)]),flip(a)].

542 A * ((x * (A * A)) * A') = A * (A * x).  [back_rewrite(469),rewrite([528(12),135(13),169(11),135(12),169(10),10(14)])].

569 A' * (x * A) = x.  [para(527(a,1),13(a,1,1)),rewrite([21(2),13(7),21(4),21(5)]),flip(a)].

573 A * (x * A') = x.  [para(21(a,1),527(a,1,2,1)),rewrite([21(7)])].

574 x / (x * A) = A'.  [para(527(a,1),29(a,1,2)),rewrite([91(6),13(5),21(2),21(3)])].

585 x / (A' * x') = A * (x * x).  [back_rewrite(512),rewrite([569(8),91(4),13(3)])].

586 A' * x = x * A'.  [back_rewrite(503),rewrite([569(5)]),flip(a)].

588 A * (A * x) = x * (A * A).  [back_rewrite(542),rewrite([586(8,R),31(9)]),flip(a)].

612 A' * (x * (A * ((y * x) * A))) = x * ((A * y) * x).  [back_rewrite(175),rewrite([586(9,R)])].

613 (x * A') * (y * (x * A')) = A' * ((x * A') * (y * x)).  [back_rewrite(173),rewrite([586(8,R)]),flip(a)].

614 (x * A') * (x * A') = A' * ((x * A') * x).  [back_rewrite(172),rewrite([586(7,R)]),flip(a)].

625 A * x = x * A.  [para(569(a,1),10(a,1,2)),rewrite([21(3)])].

627 A * (x * (A' * x)) = x * x.  [para(569(a,1),12(a,2,2)),rewrite([625(6,R)])].

631 A' * (x * x) = x * (A' * x).  [para(569(a,1),35(a,1,1,2)),rewrite([169(3),586(4,R)])].

647 A' * (x * (A * (A * (y * x)))) = x * ((A * y) * x).  [back_rewrite(612),rewrite([625(6,R)])].

704 A * (A * ((A' * x) * y)) = x * (y * A).  [back_rewrite(66),rewrite([625(7,R)])].

711 (c1 * (A * c2)) * c1 != (c1 * c2) * (A * c1).  [back_rewrite(16),rewrite([625(4,R)])].

712 (A * x) * (y * A) = A * (A * (x * y)).  [back_rewrite(15),rewrite([625(9,R)])].

716 x' * (A * x) = A.  [para(625(a,2),10(a,1,2))].

717 A * (x * x) = x * (x * A).  [para(625(a,2),11(a,1))].

718 A * (x * x) = x * (A * x).  [para(625(a,2),11(a,2,2)),rewrite([625(3,R)])].

721 (A * (A * x)) * y = A * (x * (A * y)).  [para(625(a,2),12(a,1,1,2))].

722 A * (x * (y * x)) = x * (y * (x * A)).  [para(625(a,2),12(a,1))].

740 (x * A) / (A' * x) = A * A.  [para(625(a,1),83(a,1,1))].

742 (x * A) / (A * x') = x * x.  [para(625(a,2),83(a,1,2))].

743 (A' * x') * ((x * A) * y) = y.  [para(625(a,1),46(a,1,2,1))].

746 (A * x) * x' = A.  [para(625(a,2),135(a,1,1)),rewrite([166(6),31(8)])].

747 (x * A) * x = A * (x * x).  [para(625(a,1),421(a,1,1))].

800 (x * A') * x = x * (x * A').  [para(573(a,1),421(a,1,1)),rewrite([614(12),31(13)]),flip(a)].

805 (x * A') * (x * A') = A' * (x * (x * A')).  [back_rewrite(614),rewrite([800(13)])].

813 x * (A' * x') = A'.  [para(716(a,1),13(a,1,1)),rewrite([21(4),13(5)]),flip(a)].

869 (A' * x') * x = A'.  [para(746(a,1),13(a,1,1)),rewrite([13(5),21(8)]),flip(a)].

929 (x * (x * A')) * y = x * (A' * (x * y)).  [para(586(a,1),12(a,1,1,2))].

1044 (x * (A * A)) / (A * x) = A.  [para(588(a,1),8(a,1,1))].

1056 (A * x) / (x * (A * A)) = A'.  [para(588(a,1),29(a,1,2))].

1089 x / (x * (A * A)) = A' * A'.  [para(588(a,1),60(a,1,2))].

1111 ((x' * y) / z) * (x * y') = z'.  [para(21(a,1),72(a,1,2,1))].

1165 (A * (x * x)) / (x * A) = x.  [para(717(a,2),8(a,1,1))].

1208 (x * (x * A)) / x = A * x.  [para(717(a,1),431(a,1,1))].

1223 (A * (x * x)) / (A * x) = x.  [para(718(a,2),8(a,1,1))].

1395 (x * (A * A)) / (x * A) = A.  [para(625(a,1),1044(a,1,2))].

1540 (x * (x * A')) / x = x * A'.  [para(9(a,1),1165(a,1,2)),rewrite([169(3),169(6),805(8),31(9),169(7)])].

1566 (x * A') * (A * x') = 0.  [para(1208(a,1),122(a,1,2)),rewrite([13(6),21(2),13(4),21(2),1540(5)])].

1675 ((x * A') * y) / (A * x') = A' * ((x * A') * (y * x)).  [para(1566(a,1),35(a,1,1,2,2)),rewrite([3(5),613(16)])].

1908 (A * x') * (x * x) = A * x.  [para(742(a,1),135(a,2,2)),rewrite([712(6),5(4),3(4),13(7),21(7),11(7),31(6)]),flip(a)].

2175 (A' * x') / x = x' * (A' * x').  [para(586(a,2),104(a,1,1))].

2361 (A * x) / (x * x) = A * x'.  [para(1908(a,1),8(a,1,1))].

2368 (x * x) / (A * x) = A' * x.  [para(1908(a,1),29(a,1,2)),rewrite([13(8),21(8)])].

2389 (x * y) * (x * y) = x * (y * (y * x)).  [para(75(a,1),107(a,2)),rewrite([13(2),31(4),75(2),11(2)]),flip(a)].

2406 A * (A * (x / (A * y))) = (A * x) / y.  [para(107(a,1),625(a,1)),rewrite([625(8,R),625(10,R)]),flip(a)].

2408 (A * x) / y = (x * A) / y.  [para(625(a,1),107(a,2,1)),rewrite([625(6,R),2406(7)])].

2426 (x * y) / (A' * x') = x * ((y * A) * x).  [para(813(a,1),107(a,1,2,1,2)),rewrite([152(3)]),flip(a)].

2568 (x * A) / (A * x) = 0.  [para(2408(a,1),22(a,1))].

2569 (A * x) / (x * A) = 0.  [para(2408(a,2),22(a,1))].

2572 x / (A * y) = x / (y * A).  [para(2408(a,1),59(a,1,1)),rewrite([59(4)]),flip(a)].

2655 (x * (y * A)) / (A * y) = x.  [para(2568(a,1),106(a,1,1,1)),rewrite([2(5),2568(11),2568(12),3(9),2(8)])].

2664 (x / (A * y)) * (y * A) = x.  [para(2572(a,2),9(a,1,1))].

2790 x * (A * y) = x * (y * A).  [para(2655(a,1),9(a,1,1))].

3090 (x * A) / (x * x) = A * x'.  [para(625(a,1),2361(a,1,1))].

3171 (A' * x) * (x * A) = x * x.  [para(2368(a,1),2664(a,1,1))].

3348 A * (x * ((A' * x) * (x * (A * y)))) = (A * (x * (x * x))) * y.  [para(3171(a,1),41(a,1,1,2,2)),flip(a)].

3432 (x * x) / (A' * x) = A * x.  [para(120(a,2),2361(a,1)),rewrite([13(5),21(5),21(8)])].

3439 (x * x) / (x * A') = A * x.  [para(120(a,2),3090(a,1)),rewrite([13(5),21(3),21(8)])].

3473 (A' * x) / (x * x) = A' * x'.  [para(3432(a,1),59(a,1,1)),rewrite([13(3)]),flip(a)].

3485 (A * x) * (x * A') = x * x.  [para(3439(a,1),9(a,1,1))].

3543 (A * x) * (x * x) = A * (x * (x * x)).  [para(3485(a,1),11(a,2,2)),rewrite([2389(5),39(9),573(6)]),flip(a)].

3873 (A' * x) * (y * (A' * x)) = A' * ((x * A') * (y * x)).  [para(586(a,1),133(a,1,1,1)),rewrite([21(7),1675(8)]),flip(a)].

4027 (A' * (x * x)) * y = x * (A' * (x * y)).  [para(631(a,2),12(a,1,1))].

4231 (A * x) * y = (x * A) * y.  [para(743(a,1),10(a,1,2)),rewrite([13(5),21(3),21(3)])].

4317 (x * A) * (A * y) = A * (A * (x * y)).  [para(4231(a,1),2790(a,1)),rewrite([712(10)])].

4426 (A' * x) * (y * A) = A' * ((x * A) * y).  [para(574(a,1),138(a,1,1)),rewrite([574(5),152(5),574(9)]),flip(a)].

4438 A * ((x * A') * (y * (A * A))) = (A * x) * (A * y).  [para(1044(a,1),138(a,1,1)),rewrite([1044(8),169(3),1044(17)])].

4443 (A * x) * (A * y) = A * (A * (x * y)).  [para(1395(a,1),138(a,1,1)),rewrite([1395(8),169(3),4438(10),1395(12),712(10)])].

4463 (A' * x) * (y * (A * A)) = A * (x * y).  [para(1056(a,1),138(a,1,1)),rewrite([1056(9),152(5),4317(7),10(8),1056(10)]),flip(a)].

4626 (x * A') * (A * y) = A' * ((A * x) * y).  [para(169(a,1),139(a,1,1))].

4698 (A * x') * (x * (x * y)) = x * (y * A).  [para(740(a,1),139(a,1,1)),rewrite([11(8),704(8),13(7),21(6),4426(12),747(11),10(12),11(8)]),fl

ip(a)].

4723 A' * (x * (A * (A * y))) = (x * A) * y.  [para(2569(a,1),139(a,1,1)),rewrite([2(5),13(6),4317(12),721(13),11(12),4626(14),4698(13),625(9

,R)]),flip(a)].

4815 (x * A) * (y * x) = x * ((A * y) * x).  [back_rewrite(647),rewrite([4723(9)])].

5010 (A' * x') * (x * y) = x' * ((x * A') * y).  [para(586(a,2),140(a,1,1)),rewrite([163(11),21(9)])].

5523 (A * x) * ((A' * x) * y) = A * (x * (A' * (x * y))).  [para(869(a,1),144(a,2,2,1)),rewrite([13(5),21(3),21(3),13(11),21(9),21(9),746(10)

,2175(12),627(14),3473(10),21(6),585(12),147(14),169(11),586(12,R),4027(13)])].

5927 A * (x * (x * (x * (A * ((A' * x') * y))))) = (A * x) * (x * y).  [para(1223(a,1),147(a,2,2,1)),rewrite([4443(6),13(9),721(12),12(11)])]

.

5951 (A * (x * (x * x))) * ((A' * x') * y) = A * (x * (A' * (x * y))).  [para(2368(a,1),147(a,2,2,1)),rewrite([3543(4),13(7),5523(17)])].

6022 A' * (x * (A * y)) = A * ((A' * x) * y).  [para(1089(a,1),138(a,1,1)),rewrite([1089(10),530(11),12(10),11(11),10(10),1089(11),11(12),446

3(17)])].

8433 A * (x * ((A' * x) * y)) = x * (x * y).  [para(569(a,1),227(a,1,1,2,2,2)),rewrite([627(6),11(2),6022(11),10(12)]),flip(a)].

8754 (A * (x * (x * x))) * y = x * (x * (x * (A * y))).  [back_rewrite(3348),rewrite([8433(10)]),flip(a)].

8766 x * (x * (x * (A * ((A' * x') * y)))) = A * (x * (A' * (x * y))).  [back_rewrite(5951),rewrite([8754(10)])].

8778 A * (A * (x * (A' * (x * y)))) = (A * x) * (x * y).  [back_rewrite(5927),rewrite([8766(11)])].

13078 A * (x * (A' * A')) = A' * x.  [para(1044(a,1),1111(a,1,1)),rewrite([13(5),13(12),21(12)])].

14760 A * ((A' * x) * (y * (A * (x * (A' * z))))) = (A * ((A' * x) * (y * x))) * z.  [para(573(a,1),279(a,1,1,2,2,2,2)),rewrite([6022(7),6022

(21)]),flip(a)].

17096 A * ((A' * x) * (y * x)) = A * (x * ((A' * y) * x)).  [para(13078(a,1),296(a,1,1,2,2,2,2)),rewrite([6022(10),3873(9),31(10),91(8),13(7)

,13(5),21(5),13(6),4815(8),166(9),13(8),21(2),13(6),13(4),21(4),21(5),625(7,R),573(15),6022(14)]),flip(a)].

17097 A' * ((x * A') * (y * x)) = A' * (x * ((A' * y) * x)).  [para(13078(a,1),296(a,2,2,2,2,2)),rewrite([11(13),11(19),6022(18),14760(18),17

096(9),147(13),169(10),586(11,R),10(14),8(10),11(21),6022(20),3873(19),31(20)]),flip(a)].

17170 (x * A') * (y * (x * A')) = A' * (x * ((A' * y) * x)).  [back_rewrite(613),rewrite([17097(16)])].

18109 (A * x) * (x * y) = x * (x * (y * A)).  [para(541(a,1),712(a,1,1)),rewrite([11(4),929(11),8778(13)]),flip(a)].

18758 (x * A') * (y * x) = x * ((A' * y) * x).  [para(9(a,1),722(a,2,2,2)),rewrite([169(3),169(6),17170(9),31(10),169(7)]),flip(a)].

31944 (x * (x * (y * A))) / (x * y) = A * x.  [para(18109(a,1),8(a,1,1))].

34941 (x * (x * (A * y))) / (x * y) = A * x.  [para(625(a,2),31944(a,1,1,2,2))].

36284 (x * y) / (x * (x * (A * y))) = A' * x'.  [para(34941(a,1),59(a,1,1)),rewrite([13(3)]),flip(a)].

36296 (x * (A * y)) * x = (x * y) * (A * x).  [para(34941(a,1),392(a,2,2)),rewrite([36284(6),36284(14),2426(13),625(9,R),5010(12),18758(11),1

0(9),10(7)])].

36297 $F.  [resolve(36296,a,711,a)].

 

============================== end of proof ==========================

 

% Proof 1 at 0.22 (+ 0.01) seconds.

% Length of proof is 47.

% Level of proof is 15.

% Maximum clause weight is 19.000.

% Given clauses 159.

 

1 A * (x * (A * y)) = ((A * x) * A) * y # label(non_clause) # label(goal).  [goal].

3 x * 0 = x.  [assumption].

4 x * x' = 0.  [assumption].

5 x' * x = 0.  [assumption].

6 x * (x \ y) = y.  [assumption].

7 x \ (x * y) = y.  [assumption].

8 (x * y) / y = x.  [assumption].

9 (x / y) * y = x.  [assumption].

10 x' * (x * y) = y.  [assumption].

11 (x * x) * y = x * (x * y).  [assumption].

12 (x * (y * x)) * z = x * (y * (x * z)).  [assumption].

13 (x * y)' = x' * y'.  [assumption].

14 x * (A * (x * y)) = ((x * A) * x) * y.  [assumption].

15 ((x * A) * x) * y = x * (A * (x * y)).  [copy(14),flip(a)].

16 ((A * c1) * A) * c2 != A * (c1 * (A * c2)).  [deny(1)].

20 x \ 0 = x'.  [para(4(a,1),7(a,1,2))].

21 x'' = x.  [para(5(a,1),7(a,1,2)),rewrite([20(3)])].

28 x \ y = x' * y.  [para(6(a,1),10(a,1,2)),flip(a)].

29 x / (y * x) = y'.  [para(10(a,1),8(a,1,1))].

31 x * (x' * y) = y.  [back_rewrite(6),rewrite([28(1)])].

32 (x * (x * y)) / y = x * x.  [para(11(a,1),8(a,1,1))].

35 (x * (y * (x * z))) / z = x * (y * x).  [para(12(a,1),8(a,1,1))].

36 x * ((y / x) * (x * z)) = (x * y) * z.  [para(9(a,1),12(a,1,1,2)),flip(a)].

45 (x / y)' * y' = x'.  [para(9(a,1),13(a,1,1)),flip(a)].

47 (x * A) * x = x * (A * x).  [para(15(a,1),3(a,1)),rewrite([3(3)]),flip(a)].

51 (x / y)' = y / x.  [para(9(a,1),29(a,1,2)),flip(a)].

54 (x / y) * x' = y'.  [back_rewrite(45),rewrite([51(2)])].

59 x' / y' = y / x.  [para(54(a,1),8(a,1,1))].

60 x' * ((x / y) * (x' * z)) = (x' * y') * z.  [para(54(a,1),12(a,1,1,2)),flip(a)].

64 x / x' = x * x.  [para(4(a,1),32(a,1,1,2)),rewrite([3(2)])].

78 x / y' = y / x'.  [para(21(a,1),59(a,1,1))].

93 x * ((y / (x * z)) * x) = (x * y) / z.  [para(9(a,1),35(a,1,1,2)),flip(a)].

124 (x' * y) * (x * z) = x' * ((y / x') * z).  [para(10(a,1),36(a,1,2,2)),flip(a)].

138 (x * (A * x)) / x = x * A.  [para(47(a,1),8(a,1,1))].

200 x / (x * (A' * x)) = x' * A.  [para(138(a,1),78(a,1)),rewrite([13(9),21(5),13(7),21(7)]),flip(a)].

753 (x / y) * (x' * z) = x * ((x' * y') * z).  [para(60(a,1),10(a,1,2)),rewrite([21(2)]),flip(a)].

787 x' * (A * ((A' * x) * x)) = x.  [para(200(a,1),9(a,1,1)),rewrite([124(8),753(8),21(6)])].

1507 A * ((A' * x) * x) = x * x.  [para(787(a,1),10(a,1,2)),rewrite([21(2)]),flip(a)].

1525 (A' * x) * x = A' * (x * x).  [para(1507(a,1),10(a,1,2)),flip(a)].

1947 (A' * (x * x)) / x = A' * x.  [para(1525(a,1),8(a,1,1))].

2442 (x * y) * (x * y) = x * (y * (y * x)).  [para(64(a,1),93(a,2)),rewrite([13(2),31(4),64(2),11(2)]),flip(a)].

2919 (x * (x * A)) / (A * x) = x.  [para(10(a,1),1947(a,2)),rewrite([2442(7),10(8)])].

2934 x * (A * x) = x * (x * A).  [para(2919(a,1),9(a,1,1))].

2969 A * x = x * A.  [para(2934(a,1),10(a,1,2)),rewrite([10(5)]),flip(a)].

3167 (A * (A * c1)) * c2 != A * (c1 * (A * c2)).  [back_rewrite(16),rewrite([2969(5,R)])].

3273 (A * (A * x)) * y = A * (x * (A * y)).  [para(2969(a,2),12(a,1,1,2))].

3274 $F.  [resolve(3273,a,3167,a)].

 

============================== end of proof ==========================