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arXiv · 2112.02859

Typed angularly decorated planar rooted trees and generalized Rota-Baxter algebras

Loïc Foissy·Xiao-Song Peng
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Abstract

We introduce a generalization of parametrized Rota-Baxter algebras, which includes family and matching Rota-Baxter algebras. We study the structure needed on the set $\Omega$ of parameters in order to obtain that free Rota-Baxter algebras are described in terms of typed and angularly decorated planar rooted trees: we obtain the notion of $\lambda$-extended diassociative semigroup, which includes sets (for matching Rota-Baxter algebras) and semigroups (for family Rota-Baxter algebras), and many other examples. We also describe free commutative $\Omega$-Rota-Baxter algebras generated by a commutative algebra A in terms of typed words.

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Loïc Foissy, Xiao-Song Peng. 2021-12-06. Typed angularly decorated planar rooted trees and generalized Rota-Baxter algebras. https://arxiv.org/abs/2112.02859

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