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arXiv 1007.4896math-phmath.CTmath.MPmath.RA
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Omni-Lie 2-代数及其Dirac结构

Omni-Lie 2-algebras and their Dirac structures

Yunhe Sheng, Zhangju Liu, Chenchang Zhu

摘要:

我们引入了omni-Lie 2-代数的概念,它是Weinstein omi-Lie代数的一个范畴。证明了2-向量空间$\V$的2-子向量空间上的严格Lie 2-代数结构与全Lie 2-代数$ \gl(\V)\oplus \V $上的Dirac结构之间存在一一对应.特别地,严格的李2-代数结构上的$\V$本身一一对应的狄拉克结构的形式的图。最后,我们引入了扭曲omni-Lie 2-代数的概念来描述(非严格)Lie 2-代数结构。一个扭曲的omni-Lie 2-代数的狄拉克结构对应于某些(非严格)Lie 2-代数结构,其中包括弦Lie 2-代数结构。

英文摘要:

We introduce the notion of omni-Lie 2-algebra, which is a categorification of Weinstein's omni-Lie algebras. We prove that there is a one-to-one correspondence between strict Lie 2-algebra structures on 2-sub-vector spaces of a 2-vector space $\V$ and Dirac structures on the omni-Lie 2-algebra $ \gl(\V)\oplus \V $. In particular, strict Lie 2-algebra structures on $\V$ itself one-to-one correspond to Dirac structures of the form of graphs. Finally, we introduce the notion of twisted omni-Lie 2-algebra to describe (non-strict) Lie 2-algebra structures. Dirac structures of a twisted omni-Lie 2-algebra correspond to certain (non-strict) Lie 2-algebra structures, which include string Lie 2-algebra structures.

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