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arXiv · 2108.03996

Cohomology of Leibniz Triple Systems and its applications

Xueru Wu·Liangyun Chen·Yao Ma
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Abstract

In this paper, we introduce the first and third cohomology groups on Leibniz triple systems, which can be applied to extension theory and $1$-parameter formal deformation theory. Specifically, we investigate the central extension theory for Leibniz triple systems and show that there is a one-to-one correspondence between equivalent classes of central extensions of Leibniz triple systems and the third cohomology group. We study the $T^*$-extension of a Leibniz triple system and we determined that every even-dimensional quadratic Leibniz triple system $(\mathfrak{L},B)$ is isomorphic to a $T^*$-extension of a Leibniz triple system under a suitable condition. We also give a necessary and sufficient condition for a quadratic Leibniz triple system to admit a symplectic form. At last, we develop the $1$-parameter formal deformation theory of Leibniz triple systems and prove that it is governed by the cohomology groups.

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Xueru Wu, Liangyun Chen, Yao Ma. 2021-07-22. Cohomology of Leibniz Triple Systems and its applications. https://arxiv.org/abs/2108.03996

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