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Total positivity in coordinate algebras
G. Lusztig
We define the totally positive part of the coordinate algebra associated to a Cartan datum of simply laced type. We show its relation to the canonical basis of the corresponding pl…
math.RT2026
Symplectic F_2-vector spaces and Dyck words
G. Lusztig
Let be an -vector space with a given nondegenerate symplectic form and a circular basis. We define a partition of into subsets each of which has cardinal equal to a pr…