One more try for the image:
[image: setSimplify.png]
On Wednesday, June 5, 2024 at 12:02:08 AM UTC+2 Michael Gfrerer wrote:
> I would be interested in doing symbolic manipulation of integrals
> involving unevaluated functions and symbolic integration domains. A
> simplified problem looks like:
>
>
> I can "typeset" the left-hand-side by:
>
> from sympy import *
> x = Symbol('x')
> u = Function('u')(x)
> lhs = integrate(u, (x, 'Omega',)) + integrate(u, (x, Symbol(r'D \setminus
> \Omega'),))
>
> Obviously, it is not possible to simplify the lhs. Is there a object in
> Sympy for D and \Omega to enable this?
>
>
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