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math.RT2025
Irreducible restrictions of spin representations of symmetric and alternating groups
Alexander Kleshchev, Lucia Morotti, Pham Huu Tiep
Let be an algebraically closed field and be an almost quasi-simple group. An important problem in representation theory is to classify the subgroups and $\ma…
math.RT2025
On self-extensions of irreducible modules over symmetric groups, II
Lucia Morotti
It is conjectured that irreducible representations of symmetric groups have no non-trivial self-extension over fields of odd characteristic. We improve on partial results showing e…