Revision history [back]

Here is the problem:

if I try this:

var('z')
z = 1+2*I
type(z)
<type 'sage.symbolic.expression.Expression'>

So, it isn't a complex number. BUT, if I do this:

I = CC.0
z = 1+2*I
type(z)

then I get a complex number

<type 'sage.rings.complex_number.ComplexNumber'>

Should I use numpy and cython for complex numbers?