Add cycle_type() and fix to_cycle() to SignedPermutation. #36224
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This was done jointly with Arvind Ayyer @ayyer during SageDays 122. We have cross reviewed each others' code. @mantepse @fchapoton Can one of you double-check and approve the PR? |
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The definition of negative cycle in |
mantepse
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mantepse
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mantepse
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Documentation preview for this PR (built with commit e3397a7; changes) is ready! 🎉 |
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…ation.
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We fix a "bug" in `to_cycle()` of `SignedPermutation` that does not
return the negation of a positive cycle, and add an option to hide these
cycles (the current behavior in Sage).
We add a `cycle_type()` method that returns the corresponding
`PartitionTuple` object.
We add a `conjugacy_class_reprensentative()` method.
A while-we-are-at-it thing: we fix a bug in the error output for
`Permutation.element_in_conjugacy_class()` (which a better name IMO is
`conjugacy_class_reprensentative()`).
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### ⌛ Dependencies
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URL: sagemath#36224
Reported by: Travis Scrimshaw
Reviewer(s): ayyer, Martin Rubey, Travis Scrimshaw
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We fix a "bug" in
to_cycle()ofSignedPermutationthat does not return the negation of a positive cycle, and add an option to hide these cycles (the current behavior in Sage).We add a
cycle_type()method that returns the correspondingPartitionTupleobject.We add a
conjugacy_class_reprensentative()method.A while-we-are-at-it thing: we fix a bug in the error output for
Permutation.element_in_conjugacy_class()(which a better name IMO isconjugacy_class_reprensentative()).📝 Checklist
⌛ Dependencies