Geodesic
A symmetric basis of the algebra of quasi-symmetric coinvariants
The electronic journal of combinatorics, Tome 12 (2005)

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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. [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.]
DOI : 10.37236/1983
Classification : 05E05
Mots-clés : indexing set, triangulations, regular polygon 
Frédéric Chapoton. A symmetric basis of the algebra of quasi-symmetric coinvariants. The electronic journal of combinatorics, Tome 12 (2005). doi: 10.37236/1983
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     author = {Fr\'ed\'eric Chapoton},
     title = {A symmetric basis of the algebra of quasi-symmetric coinvariants},
     journal = {The electronic journal of combinatorics},
     year = {2005},
     volume = {12},
     doi = {10.37236/1983},
     zbl = {1074.05089},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1983/}
}
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