A generalization of Chebyshev polynomials and non rooted posets

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In this paper we give a generalization of Chebyshev polynomials and using this we describe the Möbius function of the generalized subword order from a poset {a1,...as,c |ai<c}, which contains an affirmative answer for the conjecture by Björner, Sagan, Vatter.[5,10]
11pages

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Combinatorics, 06A07

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http://salesiana.dossiersoluciones.com/handle/123456789/126985

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0704.0685
 http://arxiv.org/abs/0704.0685

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arXiv