Frayed Demazure weaves yield Poisson-compatible cluster structures on Bott-Samelson charts whose transitions are rational quasi-cluster morphisms, with mutation sequences related to Ménard's open Richardson seeds.
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math.CO 2years
2026 2verdicts
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Extends Muller-Speyer by constructing extremal matchings via height functions on almost perfect matchings of plabic graphs and proving coverage of all boundary conditions.
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Frayed Demazure weaves for Poisson-compatible cluster structures on Bott--Samelson charts
Frayed Demazure weaves yield Poisson-compatible cluster structures on Bott-Samelson charts whose transitions are rational quasi-cluster morphisms, with mutation sequences related to Ménard's open Richardson seeds.
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Extremal Matchings and Height Functions
Extends Muller-Speyer by constructing extremal matchings via height functions on almost perfect matchings of plabic graphs and proving coverage of all boundary conditions.