163 citations · 922 across the 75 of their papers we have counts for
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3 papers · 1 filter
math.CO2020★ 2 cited
Positroids, knots, and -Catalan numbers
Pavel Galashin, Thomas Lam
We relate the mixed Hodge structure on the cohomology of open positroid varieties (in particular, their Betti numbers over and point counts over ) to Kho…
math.AG2020★ 32 cited
Cluster Configuration Spaces of Finite Type
Nima Arkani-Hamed, Song He, Thomas Lam
For each Dynkin diagram , we define a ''cluster configuration space'' and a partial compactification . For , we have…
math.CO2020★ 30 cited
Positive configuration space
Nima Arkani-Hamed, Thomas Lam, Marcus Spradlin
We define and study the totally nonnegative part of the Chow quotient of the Grassmannian, or more simply the nonnegative configuration space. This space has a natural stratificati…