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### Bug report
**Bug summary**
When cross-compiling matplotlib and dependencies (numpy, six, pytz, etc) for OpenWRT in Ubuntu 16.04LTS, all code properly compiles. However, when testing ma…
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On [L421-L423](https://github.com/vim/vim/blob/master/src/blowfish.c#L421-L423) of src/blowfish.c, a `sha256_key()` function is created for password-based key derivation with a salt for blowfish. Unfo…
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The "factor" function in polynomial_element.pyx needs to be refactored, because it has to be modified every time a new interesting base ring gets added to Sage.
Instead of importing a ton of diffe…
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At
https://github.com/fredrik-johansson/flint2/tree/alltogether/
is a branch of Flint with Arb, Calcium and generic-rings all merged into the same project (Antic was merged previously). This iss…
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Iterated polynomial application seems to be broken, but only for Polynomials with different types. MWE:
```
julia> f = Polynomial((1, -1, -1.1))
Polynomial(1 - x - 1.1*x^2)
julia> f(f)
ERROR: M…
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This came up as part of my review of #12043, but it's of independent interest.
The level 1 Eisenstein series can be normalized in three natural ways: so the linear coefficient is 1; so the constant…
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It would be great to have an interface to GAP3 so that one can use GAP3 packages that have not been ported to GAP4. Of particular interest are the packages (sage-devel occasionally receives question…
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In #29033 in `build/bin/sage-spkg` LC_ALL was changed to C.UTF-8
However, not all systems have it.
See also:
- #22659
Follow-up:
- #30008 Fix sage-system-python
- #30586 macOS: Doctest failures i…
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**Describe the behavior you would like added to mBuild**
The performance of Compound.bonds() does not seem to scale well with system size. While this is annoying for modest system sizes, mbuild beco…
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I occasionally find myself trying to solve polynomial systems arising from rational equations:
```
sage: R. = GF(31337)[]
sage: xx = (x*y+y*x) / (1+23*x^2*y^2)
sage: yy = (y^2-x^2) / (1+23*x^2*y^2)…