On the conjecture of Shang about free alternative algebras

Fuente: arXiv
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Main Author: Dotsenko, Vladimir
Format: Preprint
Published: 2025
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_version_ 1866916663790665728
author Dotsenko, Vladimir
author_facet Dotsenko, Vladimir
contents Kashuba and Mathieu proposed a conjecture on vanishing of some components of the homology of certain Lie algebras, implying a description of the $GL_d$-module structure of the free $d$-generated Jordan algebra. Their conjecture relies on a functorial version of the Tits-Kantor-Koecher construction that builds Lie algebras out of Jordan algebras. Recently, Shang used a functorial construction of Allison, Benkart and Gao that builds Lie algebras out of alternative algebras to propose another conjecture on vanishing of some components of the homology of certain Lie algebras, implying a description of the $GL_d$-module structure of the free $d$-generated alternative algebra. In this note, we explain why the conjecture of Shang is not true.
format Preprint
id arxiv_https___arxiv_org_abs_2503_16074
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On the conjecture of Shang about free alternative algebras
Dotsenko, Vladimir
Rings and Algebras
K-Theory and Homology
Quantum Algebra
Kashuba and Mathieu proposed a conjecture on vanishing of some components of the homology of certain Lie algebras, implying a description of the $GL_d$-module structure of the free $d$-generated Jordan algebra. Their conjecture relies on a functorial version of the Tits-Kantor-Koecher construction that builds Lie algebras out of Jordan algebras. Recently, Shang used a functorial construction of Allison, Benkart and Gao that builds Lie algebras out of alternative algebras to propose another conjecture on vanishing of some components of the homology of certain Lie algebras, implying a description of the $GL_d$-module structure of the free $d$-generated alternative algebra. In this note, we explain why the conjecture of Shang is not true.
title On the conjecture of Shang about free alternative algebras
topic Rings and Algebras
K-Theory and Homology
Quantum Algebra
url https://arxiv.org/abs/2503.16074