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math.RT2026
Wide Regular Subalgebras of Symmetrizable Kac-Moody Algebras and an Extension of Schur's Lemma
Andrew Douglas, Abid Ali
The behavior of representations under restriction is a central theme in Lie theory. We study wide regular subalgebras of symmetrizable Kac--Moody algebras, extending work of Dougla…
math.RT2026
Prosummability in Kac--Moody groups
Abid Ali, Lisa Carbone, Elizabeth Jurisich +1
Let be a symmetrizable Kac--Moody algebra. We describe {standard graded} -modules , which we use to construct a completion and pro-uni…