Chapoton, Frédéric A symmetric basis of the algebra of quasi-symmetric coinvariants. (Une base symétrique de l’algébre des coinvariants quasi-symétriques.) (French) Zbl 1074.05089 Electron. J. Comb. 12, No. 1, Research paper N16, 7 p. (2005). Summary: 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. MSC: 05E05 Symmetric functions and generalizations Keywords:indexing set; triangulations; regular polygon PDFBibTeX XMLCite \textit{F. Chapoton}, Electron. J. Comb. 12, No. 1, Research paper N16, 7 p. (2005; Zbl 1074.05089) Full Text: arXiv EuDML EMIS