Bergeron, N.; Hohlweg, C.; Rosas, M. et Zabrocki, M.
(2006).
« Grothendieck bialgebras, Partition lattices, and symmetric functions in noncommutative variables ».
Electronic Journal of Combinatorics, 13(1 R), pp. 1-19.
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Résumé
We show that the Grothendieck bialgebra of the semi-tower of partition lattice algebras is isomorphic to the graded dual of the bialgebra of symmetric functions in noncommutative variables. In particular this isomorphism singles out a canonical new basis of the symmetric functions in noncommutative variables which would be an analogue of the Schur function basis for this bialgebra.