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v4
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Theorem
card_derangements_invariant
Modification history
2023-08-10 19:52
Mathlib/Combinatorics/Derangements/Finite.lean
chore: banish `Type _` and `Sort _` (#6499) …
Modified
card_derangements_invariant
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2023-03-27 11:56
Mathlib/Combinatorics/Derangements/Finite.lean
feat: port Combinatorics.Derangements.Finite (#3102)
Added
card_derangements_invariant
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