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var('t,x3')

var('t,x3')
p1= -3+2.5tanh(2.t)+(3.19sech(x3)-2.69)I
 
-3+2.5*tanh(2.*t)+(3.19*sech(x3)-2.69)*I
p2= -3+2.5tanh(2.t)-(3.19sech(x3)-2.69)I
 
p3=-4
 
-3+2.5*tanh(2.*t)-(3.19*sech(x3)-2.69)*I
p3=-4
diagAbar= diagonal_matrix(Ta.[p1,p2,p3])
 
dAbar=diagAbar.subs(t=0);dAbardiagonal_matrix(Ta.[p1,p2,p3])
dAbar=diagAbar.subs(t=0);dAbar

Playing around with dAbar I found that:

TdiagAbar=dAbar.conjugate()

works, but

TdiagAbar=dAbar.transpose()

and

TdiagAbar=dAbar.conjugate()+dAbar

do not work. Sorry, I didn't follow much of what link said. I do a lot of symbolic math with symbolic variables such as with t and x3 above. I know MATLAB well and Mathematica somewhat. I would prefer to support Sage. Thanks for your help.

nonlinear