The Moura–Pereira conjecture on modules associated with minimal affinizations

Let \lieg\lie g be a simple Lie algebra, let P+P^+ denote its dominant integral weights, and let M(λ)M(\lambda) and T(λ)T(\lambda) be the graded \lieg[t]\lie g[t]-modules defined in the paper for λP+\lambda\in P^+. For \gbλPA×\gb\lambda\in\cal P_\mathbb A^\times, let Vq(\gbλ)V_q(\gb\lambda) be a minimal affinization of the irreducible Uq(\lieg)U_q(\lie g)-module Vq(λ)V_q(\lambda), and let L(\gbλ)L(\gb\lambda) denote its classical limit. Moura–Pereira's conjecture. For every λP+\lambda\in P^+,

M(λ)T(λ).M(\lambda)\cong T(\lambda).

Moreover, if supp(λ)\overline{\rm supp}(\lambda) is of type AA and Vq(\gbλ)V_q(\gb\lambda) is a minimal affinization of Vq(λ)V_q(\lambda), then

M(λ)L(\gbλ).M(\lambda)\cong L(\gb\lambda).

The conjecture identifies the modules defined by generators and relations with the graded modules arising from classical limits of minimal affinizations. The source gives no resolution status; the claim is presented as the main conjecture of the cited work.

Sources & referencesView supporting material

Primary source

Adriano Moura and Fernanda Pereira, “Graded limits of minimal affinizations and Beyond: the multiplicty free case for type E6”, arXiv:1012.2592 (2010).

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