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**Describe the bug**
@KulaginVladimir and I recently noticed that we can't use natural log in expressions (probably temperature, sources, boundary conditions) due to [this issue](https://fenicsproj…
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Thanks for the great project. I am reading the doc and code; and for some fusion, I am not sure how we use the generated code (from python sympy) in the final code. For example,
this is the generat…
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We should not import any sympy symbols into the global namespace, to avoid people calling sympy functions on Cadabra expressions and expecting that to work in all situations. We then need wrappers in …
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Hi @certik,
Thank you for maintaining the sympy.
Here is the code where simplify(Znm(3, -1, theta, phi).expand(func=True)) failed to cancel out the imaginary part symbolically.
```
from s…
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Using sympy.physics.mechanics I tried to simulate a system, where the forces are a product of terms defined using sympy.Piecewise((.., ..), (.., ..), ...).
I came across this:
After lambdification, t…
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## Summary
The stable and supported versions of Python are currently [3.8 to 3.12](https://devguide.python.org/versions/).
[What’s New In Python 3.12](https://docs.python.org/3/whatsnew/3.12.htm…
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It would be nice to include benchmarks vs SymPy and Mathematica. These are the larger players in the field, and Julia is usually good at showing speedups. However, this will also be useful to show tha…
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We should add tests for sympy-bot somehow, to test against regressions. Any ideas how to do that? I guess we should allow sympy-bot to use a user specified server, and the tests would specify to use s…
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Say we define a time-dependent generator for `HamEvo`:
```
td_gen = omega * (sympy.sin(x * t) * X(0) + y * (t**2) * Y(1))
```
If `x` and `y` are instances of `Parameter` (`t` is the time paramet…
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In sympy whatever order I use to create an equation is what I get in the resulting equation, but symengine has a canonical order. This doesn't seem to add much value (and slows the creation of the obj…