thing = 1-10^(-20)

a = sqrt(2)*thing^(-1)

b = thing*(2*thing^(-2)-1)

c = thing^(-1)

d = sqrt(2)*thing^(-1) 


z -> i*(sqrt(2) + 1) * z

aa = i*(sqrt(2) + 1)
bb = 0;
cc = 0;
dd = 1;
