Singular blocks of restricted

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• 作者：Matthew Towers ^{mjt43@le.ac.uk" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Restricted enveloping algebras ; Lie algebras
• 刊名：Journal of Algebra
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：471
• 期：Complete
• 页码：176-192
• 全文大小：408 K

文摘

We compute generators and relations for the basic algebra of a non-semisimple singular block of the restricted enveloping algebra of sl₃ 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.