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Looks, very nice. I tried some basic Mathematica functions (D[], Plot[], ...) and at least that subset all worked as expected.

I couldn't find a full table of compatibility with Mathematica though, anyone know where one is?

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Really nice, but it supports only the very basics e.g Plot[x^2, {x, -1, 1}, AxesLabel -> {x, y}, PlotStyle -> Dashed, Filling -> Bottom] ignores all options And D can't compute JacobiP derivative even with Simplify[ D[JacobiP[n, a, b, x], x] == 1/2 (1 + a + b + n) JacobiP[-1 + n, 1 + a, 1 + b, x]]

It's startling how much work goes into something like Mathematica, too bad it's not open source, and have to be redone:(

Closed source paid the salaries of the people who put that startling amount of work in.

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