Revision history [back]

dAbar=diagAbar.subs(t=0);dAbar 
 
[ 3.18953143618644Isech(x3) 3.18953143618644*I*sech(x3) - 3.00000000000000 - 2.68953143618644*I 
 
0                                                                    0]
 
0]
[                                                                   0
-3.18953143618644Isech(x3) -3.18953143618644*I*sech(x3) - 3.00000000000000 + 2.68953143618644*I 

0]
 
   
0]

[                                                                   0 
 
0                                                                   -4]
 
-4]

TdiagAbar=dAbar.conjugate_transpose() + dAbar
 
dAbar

Traceback (click to the left of this block for traceback)
...
AttributeError:
'sage.rings.complex_interval.ComplexIntervalFieldElement' object has no
attribute 'sech''sech'

I hope their is an easy answer. Thanks, nonlinear