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arXiv · 1406.1155

Singular blocks of restricted sl3

Matthew Towers
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Abstract

We compute generators and relations for the basic algebra of a non-semisimple singular block of the restricted enveloping algebra of $\mathfrak{sl}_3$ over an algebraically closed field of characteristic $p>3$. Working directly with the basic algebra we compute its centre and the internal degree zero part of its first Hochschild cohomology, and show its Verma modules are Koszul.

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Matthew Towers. 2014-06-04. Singular blocks of restricted sl3. https://arxiv.org/abs/1406.1155

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