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arXiv · 2506.18486

J-ternary algebras, structurable algebras, and Lie superalgebras

Isabel Cunha·Alberto Elduque
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Abstract

A Lie superalgebra is attached to any finite-dimensional J-ternary algebra over an algebraically closed field of characteristic 3, using a process of semisimplification via tensor categories. Some of the exceptional simple Lie algebras, specific of this characteristic, are obtained in this way from J-ternary algebras coming from structurable algebras and, in particular, a new magic square of Lie superalgebras is constructed, with entries depending on a pair of composition algebras.

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Isabel Cunha, Alberto Elduque. 2025-06-23. J-ternary algebras, structurable algebras, and Lie superalgebras. https://arxiv.org/abs/2506.18486

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