Cohomology and Deformations of Relative Rota-Baxter Operators on Lie-Yamaguti Algebras
MATHEMATICS(2024)
Abstract
In this paper, we establish the cohomology of relative Rota-Baxter operators on Lie-Yamaguti algebras via the Yamaguti cohomology. Then, we use this type of cohomology to characterize deformations of relative Rota-Baxter operators on Lie-Yamaguti algebras. We show that if two linear or formal deformations of a relative Rota-Baxter operator are equivalent, then their infinitesimals are in the same cohomology class in the first cohomology group. Moreover, an order n deformation of a relative Rota-Baxter operator can be extended to an order n+1 deformation if and only if the obstruction class in the second cohomology group is trivial.
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Key words
Lie-Yamaguti algebra,relative Rota-Baxter operator,cohomology,deformation
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