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Bug related with UnitValue on sympy function when you execute it on the derivative of the function
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And more funny deps on the order of limits:
```pycon
>>> from diofant.integrals.meijerint import *
>>> meijerint_definite(exp(-x**2), x, 0, 1)
⎛ ___ ⎞
⎜╲╱ π ⋅erf(1) ⎟
⎜────────…
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I tried to use the online shell
@ https://www.sympy.org/en/shell.html
but the loading process seems never finishing.
always displaying [*]:
[*]: from sympy import *
from sympy import *
…
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A source code review of SymPy recovered [this gem](https://github.com/sympy/sympy/blob/master/sympy/core/tests/test_expr.py). The class 'DummyNumber', on line 22, has a description of the class requir…
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#22801 introduced SymPy as an optional engine for symbolic calculus on manifolds. However, not all simplifications are performed by SymPy; in particular those depending on assumptions are still trea…
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While working with polynomials in `SymPy.jl` I encountered segfaults when using Julia threads. MWE:
```
julia> using SymPy
julia> @syms a
(a,)
julia> p = sympy.Poly(a^2 + 3*a -2, a)
Poly(a**…
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Google recently added a feature that lets you solve various geometric problems with their search engine (http://googlesystem.blogspot.com/2014/03/google-geometry-calculator.html, https://support.googl…
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Recently I found out that my PR #33 where i sorted a dictionary actually created another issue with satisfiable which needed another PR #39, So i think we should add tests in Django. This will actuall…
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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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Reducing the number of needed imports to create a more pure version of the library