Counting involutory, unimodal, and alternating signed permutations |
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| Authors: | Chak-On Chow |
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| Affiliation: | Institute of Mathematics, Academia Sinica, Taipei 11529, Taiwan |
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| Abstract: | In this work we count the number of involutory, unimodal, and alternating elements of the group of signed permutations Bn, and the group of even-signed permutations Dn. Recurrence relations, generating functions, and explicit formulas of the enumerating sequences are given. |
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| Keywords: | primary, 05A15 secondary, 05A19, 05A05 |
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