Cactus-to-toggle factorization conjecture for minuscule crystals
Cactus-to-toggle factorization conjecture for minuscule crystals
Let be a simple Lie algebra, let be a minuscule dominant weight, and let be the corresponding Weyl group element. Write for the cactus group, for the toggle group, and for the reverse plane partitions associated with . The crystal is identified with . Cactus-to-toggle factorization conjecture. There is a surjective map
such that the action of the cactus group on the crystal
factors through this map. In type , the action of the cactus group on the crystal is generated by cactus elements corresponding to length and subdiagrams of the Dynkin diagram. This conjecture proposes a uniform relationship between cactus-group actions and toggle actions beyond type , extending the known connection between Berenstein--Kirillov involutions and cactus groups in type and the toggle models for minuscule Demazure crystals in types. The status of the proposed factorization and the type generation statement is not established in the supplied text.
Sources & referencesView supporting material
Primary source
Devin Brown, Balazs Elek and Iva Halacheva, “Cacti, Toggles, and Reverse Plane Partitions”, arXiv:2412.02614 (2024).
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