On Feb 1, 12:01 pm, Burcin Erocal <bur...@erocal.org> wrote:
> On Mon, 31 Jan 2011 14:19:51 -0800 (PST)
>
> Michael Beeson <profbee...@gmail.com> wrote:
> > It seems that var('z') makes sage think z is real.
>
> > simplify(real(z)) returns z and simplify(imag(z)) returns 0.
>
> This is #6862 on trac:
>
> http://trac.sagemath.org/sage_trac/ticket/6862
>
> It's one of the major bugs remaining in the maxima interface.
>
> Cheers,
> Burcin
I would like to add what is perhaps a related issue.
If I do
var('a')
assume(a, 'real')
I would like to have the imaginary part returned as zero. However
imag(a)
returns imag(a), as though it is a symbol, I believe because
type(imag(a) returns <type 'sage.symbolic.expression.Expression'>.
To be consistent with the assumption, though, I think that iimag(a)
should return zero.
Jeff
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