Extends Lusztig total positivity to symmetric spaces G/K via Hausdorff closure, proves cell decomposition with positive parametrizations and subtraction-free transitions.
Karp, and Thomas Lam
2 Pith papers cite this work. Polarity classification is still indexing.
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2026 2verdicts
UNVERDICTED 2representative citing papers
Fence complexes are associated to positroid varieties, shown to be balls with matching Ehrhart and Hilbert polynomials, and positroid varieties degenerate to reduced unions of toric varieties corresponding to the complexes.
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Total positivity and symmetric spaces
Extends Lusztig total positivity to symmetric spaces G/K via Hausdorff closure, proves cell decomposition with positive parametrizations and subtraction-free transitions.
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Fence Complexes and Toric Degenerations of Positroid Varieties
Fence complexes are associated to positroid varieties, shown to be balls with matching Ehrhart and Hilbert polynomials, and positroid varieties degenerate to reduced unions of toric varieties corresponding to the complexes.