The converse to the projective support characterization for quasi-reductive supergroups

From papers

Let GG be a quasi-reductive supergroup, and let MRep(G)M\in\operatorname{Rep}(G). Write gneat\mathfrak{g}_{\mathrm{neat}} for the neat locus in the odd part of the Lie superalgebra, and supp(M)\operatorname{supp}(M) for the support of MM. Support-projectivity conjecture. If

supp(M)=gneat,\operatorname{supp}(M)=\mathfrak{g}_{\mathrm{neat}},

then MM is projective. This conjectures the converse of the preceding projective-support characterization; it is posed for quasi-reductive supergroups and is presented as an open question in the source.

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Sources & referencesView supporting material

Primary source

Inna Entova-Aizenbud and Vera Serganova, “Jacobson-Morozov Lemma for Algebraic Supergroups”, arXiv:2007.08731 (2026).

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