New identities in dendriform algebras

Details New identities in dendriform algebras New identities in dendriform algebras

2007-05-18

arxiv.org/abs/0705.2636v2

Journal of Algebra 320, 708-727 (2008)

Mathematics

Combinatorics

16 pages, LaTeX. Concrete examples and applications added

Scientific paper

Dendriform structures arise naturally in algebraic combinatorics (where they allow, for example, the splitting of the shuffle product into two pieces) and through Rota-Baxter algebra structures (the latter appear, among others, in differential systems and in the renormalization process of pQFT). We prove new combinatorial identities in dendriform dialgebras that appear to be strongly related to classical phenomena, such as the combinatorics of Lyndon words, rewriting rules in Lie algebras, or the fine structure of the Malvenuto-Reutenauer algebra. One of these identities is an abstract noncommutative, dendriform, generalization of the Bohnenblust-Spitzer identity and of an identity involving iterated Chen integrals due to C.S. Lam.

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