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arXiv 2204.04872math.RAmath.RT
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Lie-Yamaguti代数上相对Rota-Baxter算子的上同调与变形

Cohomology and deformations of Relative Rota-Baxter operators on Lie-Yamaguti algebras

Jia Zhao, Yu Qiao

摘要:

本文利用Yamaguti上同调,建立了Lie-Yamaguti代数上相对Rota-Baxter算子的上同调.然后利用这类上同调刻画了Lie-Yamaguti代数上相对Rota-Baxter算子的变形。证明了若相对Rota-Baxter算子的两个线性或形式变形等价,则它们的无穷小量在第一上同调群中属于同一上同调类.此外,相对Rota-Baxter算子的$n$阶变形可以推广到$n+1$阶变形当且仅当第二上同调群中的阻塞类是平凡的.

英文摘要:

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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