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arXiv 2007.09440math.RAmath-phmath.MP
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Hom-李代数上的$\mathcal{O}$ -算子

$\mathcal{O}$-Operators on Hom-Lie algebras

Satyendra Kumar Mishra, Anita Naolekar

摘要:

李代数上的$\mathcal{O}$ -算子(也称为相对Rota-Baxter算子)在可积系统和经典的杨-巴克斯特方程中有许多应用。本文研究了hom-李代数上的$\mathcal{O}$ -算子.定义了Hom-李代数上$\mathcal{O}$ -算子关于表示的上链复形.任何$\mathcal{O}$ -算子都导出hom-pre-李代数结构。我们将$\mathcal{O}$ -算子的上链复形表示为与诱导hom-pre-李代数相关的次相邻hom-李代数的某种hom-李代数的上链复形.如果一个hom-李代数的结构映射及其表示是可逆的,那么通过增加零上链空间,我们可以将上述上链复形推广到$\mathcal{O}$ -算子的变形复形.随后,我们利用变形上同调研究了Hom-李代数上$\mathcal{O}$ -算子的线性变形和形式变形。最后,作为$\mathcal{O}$ -算子在hom-李代数上的特例,我们推导出了权为0的$s$ -Rota-Baxter算子和反对称$r$ -矩阵在hom-李代数上的变形.

英文摘要:

$\mathcal{O}$-operators (also known as relative Rota-Baxter operators) on Lie algebras have several applications in integrable systems and the classical Yang-Baxter equations. In this article, we study $\mathcal{O}$-operators on hom-Lie algebras. We define cochain complex for $\mathcal{O}$-operators on hom-Lie algebras with respect to a representation. Any $\mathcal{O}$-operator induces a hom-pre-Lie algebra structure. We express the cochain complex of an $\mathcal{O}$-operator in terms of certain hom-Lie algebra cochain complex of the sub-adjacent hom-Lie algebra associated with the induced hom-pre-Lie algebra. If the structure maps in a hom-Lie algebra and its representation are invertible, then we can extend the above cochain complex to a deformation complex for $\mathcal{O}$-operators by adding the space of zero cochains. Subsequently, we study linear and formal deformations of $\mathcal{O}$-operators on hom-Lie algebras in terms of the deformation cohomology. In the end, we deduce deformations of $s$-Rota-Baxter operators (of weight 0) and skew-symmetric $r$-matrices on hom-Lie algebras as particular cases of $\mathcal{O}$-operators on hom-Lie algebras.

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