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arXiv 1902.07360math.RA
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Hom-pre-李代数的表示与上同调

Representations and cohomologies of Hom-pre-Lie algebras

Shanshan Liu, Lina Song, Rong Tang

摘要:

本文首先研究了Hom-pre-李代数的对偶表示和张量表示。然后,我们利用Hom-李代数的上同调理论,发展了Hom-准李代数的上同调理论。作为应用,我们研究了Hom-pre-李代数的线性变形,这些线性变形是由系数在正则表示中的Hom-pre-李代数的第二上同调群刻画的.在Hom-pre-李代数上引入了Nijenhuis算子的概念,该算子能产生Hom-pre-李代数的平凡线性变形.最后,我们引入了Hom-准李代数上的Hessian结构的概念,Hessian结构是一个系数为平凡表示的对称非退化2-上圈。我们还在Hom-准李代数上引入了$\huaO$ -算子的概念,并利用它给出了Hessian结构的一个等价刻画.

英文摘要:

In this paper, first we study dual representations and tensor representations of Hom-pre-Lie algebras. Then we develop the cohomology theory of Hom-pre-Lie algebras in term of the cohomology theory of Hom-Lie algebras. As applications, we study linear deformations of Hom-pre-Lie algebras, which are characterized by the second cohomology groups of Hom-pre-Lie algebras with the coefficients in the regular representation. The notion of a Nijenhuis operator on a Hom-pre-Lie algebra is introduced which can generate trivial linear deformations of a Hom-pre-Lie algebra. Finally, we introduce the notion of a Hessian structure on a Hom-pre- Lie algebra, which is a symmetric nondegenerate 2-cocycle with the coefficient in the trivial representation. We also introduce the notion of an $\huaO$-operator on a Hom-pre-Lie algebra, by which we give an equivalent characterization of a Hessian structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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