Felipe de Mattos Chafik Hindi

collaborators

2 papers

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…