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Kleshchev–Martin conjecture on self-extensions of simple symmetric-group modules
Let $k$ be a field of odd characteristic, let $n$ be a positive integer, and let $S$ be a simple $kS_n$ -module. Kleshchev–Martin conjecture. The module $S$ does not admit a self-ex…
Conjectureopenrepresentation-theory self-extensions symmetric-groupsarXiv posted 2 days ago

Kleshchev–Martin conjecture on self-extensions of simple symmetric-group modules