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Results tagged with permutations
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user 8871
Questions related to permutations, bijections from a finite (or sometimes infinite) set to itself.
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votes
Non-enumerative proof that there are many derangements?
Viewing perfect matchings of $K_{n,n}$ as permutations of an $n$-element set, the event $\bigwedge_{i=1}^n \overline{A_{M_i}}$ contains precisely those permutations not having a fixed point. …
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