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arXiv · 2110.02941

The Lie algebra structure of the $HH^1$ of the blocks of the sporadic Mathieu groups

William Murphy
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Abstract

Let $G$ be a sporadic Mathieu group and $k$ an algebraically closed field of prime characteristic $p$, dividing the order of $G$. In this paper we describe some of the Lie algebra structure of the first Hochschild cohomology groups of the $p$-blocks of $kG$. In particular, letting $B$ denote a $p$-block of $kG$, we calculate the dimension of $HH^1(B)$ and in the majority of cases we determine whether $HH^1(B)$ is a solvable Lie algebra.

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BibTeXRIS

William Murphy. 2021-10-23. The Lie algebra structure of the $HH^1$ of the blocks of the sporadic Mathieu groups. https://arxiv.org/abs/2110.02941

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