Felipe de Mattos Chafik Hindi

collaborators

3 papers

math.RA2026

Graded bimodules over split group algebras: stabilizers and Peirce decompositions

Felipe de Mattos Chafik Hindi, Waldeck Schutzer

We classify, up to graded isomorphism, graded bimodules over split group algebras of finite abelian subgroups of an arbitrary group. The classification is governed by double cosets…

math.RA2026

A classification of group gradings on incidence algebras over commutative rings

Felipe de Mattos Chafik Hindi, Waldeck Schutzer

Let $R$ be a commutative ring with 1, $P$ a locally finite partially ordered set, and $G$ a group. We derive necessary and sufficient conditions for an $R$ -algebra isomorphism betw…

math.RT2026

Atomic Decompositions of Lie Characters and the Dominant Weight Poset

Felipe de Mattos Chafik Hindi, Waldeck Schutzer

Let $g$ be a complex semisimple Lie algebra and, for a dominant integral weight $λ$ , let $Θ_{λ}$ be the multiplicity-free sum of the weights of the irreducible module $V(λ…