Singular blocks of restricted sl3
Abstract
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.
0
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.