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Une base symétrique de l'algèbre des coinvariants quasi-symétriques

Frédéric Chapoton
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Abstract

We describe a new basis of the ring of quasi-symmetric coinvariants, which is stable by the natural reversal of the set of variables. The indexing set is the set of triangulations of a regular polygon, instead of the set of Dyck paths used for the known basis. On décrit une nouvelle base de l'algèbre des coinvariants quasi-symétriques, qui est stable par l'involution naturelle et indexée par les triangulations d'un polygone régulier.

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BibTeXRIS

Frédéric Chapoton. 2005-06-10. Une base symétrique de l'algèbre des coinvariants quasi-symétriques. https://arxiv.org/abs/math/0506192

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