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The current code for computing twists of newforms by Dirichlet characters is unnecessarily slow, because it computes a full decomposition of the target space into simple Hecke modules, and then thro…
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The purpose of this ticket is to upgrade `DirichletGroup` from an old-style `ParentWithMultiplicativeAbelianGens` to a proper `Parent`.
At the same time, we place `DirichletGroup` in the category o…
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I am not sure if this is the right place for this issue, but as I tried everything I could on my computer (including uninstalling and reinstalling gfortran several times) and still get the same error,…
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Dirichlet characters modulo 2 are printed in a strange way:
```
sage: DirichletGroup(2)[0]
Dirichlet character modulo 2 of conductor 1 mapping
```
After #17337, this also happens for Dirichlet cha…
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From http://groups.google.com/group/sage-support/browse_thread/thread/21d861876918e668
```
> While I looked at ideal's docstring I noticed plenty of construct like
> sage: R, x = PolynomialRin…
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Hello,
Something strange when Natron is started with the shell script Natron in the Natron2/ directory.
I've installed Natron in `~/bin/Natron2` directory.
Natron-1d08991f7a2e24d086881c29b638461dd9d…
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I would like to be able to add links to the blog description. For example: "I work at [link]"
Maybe support markdown for the description or just allow raw HTML for now.
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As was noticed in #14793, some sanity checks need to be disabled in Hom when called upon unpickling because the input may include an unitialized parent. Since #14793, this is achieved by looking at …