On Mon, Sep 3, 2012 at 8:35 AM, Kjetil brinchmann Halvorsen
<[email protected]> wrote:
> I want to solve an equation with non-commutative symbols (actually
> squarematrices):
>
> A,P,R = symbols('A P R', commutative=FALSE)

First, use False (a python boolean) instead of FALSE (an undefined
variable unless you defined it as FALSE = False).

>
> Then:
>
> solve(R=A*P+P*A,P)
>

The syntax is to give an expression that should be zero or an Eq
instance; you can't simply use the equal sign to do this:

solve(R - (A*P+P*A), P)

> but this only gives some involved error?
>

If you do the above you will get no error (and also no answer because
the solution for this is not implemented). What do you expect the
answer to be?

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