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On permutations avoiding partially ordered patterns defined by bipartite graphs - MaRDI portal

On permutations avoiding partially ordered patterns defined by bipartite graphs

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Publication:6396897

DOI10.37236/11199arXiv2204.08936MaRDI QIDQ6396897

Sergey Kitaev, Artem Pyatkin

Publication date: 19 April 2022

Abstract: Partially ordered patterns (POPs) generalize the notion of classical patterns studied in the literature in the context of permutations, words, compositions and partitions. In this paper, we give a number of general, and specific enumerative results for POPs in permutations defined by bipartite graphs, substantially extending the list of known results in this direction. In particular, we completely characterize the Wilf-equivalence for patterns defined by the N-shape posets.












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