Abstract
This paper introduces subgroups of the symmetric group and studies their combinatorial properties. Their elements are called parity alternating, because they are permutations with even and odd entries alternately. The objective of this paper is twofold. The first is to derive several properties of such permutations by subdividing them into even and odd permutations. The second is to discuss their combinatorial properties; among others, relationships between those permutations and signed Eulerian numbers. Divisibility properties by prime powers are also deduced for signed Eulerian numbers and several related numbers.
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Tanimoto, S. Parity Alternating Permutations and Signed Eulerian Numbers. Ann. Comb. 14, 355–366 (2010). https://doi.org/10.1007/s00026-010-0064-3
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DOI: https://doi.org/10.1007/s00026-010-0064-3