69 citations · 221 across the 16 of their papers we have counts for
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math.AG2017★ 1 cited
Tropicalization of Positive Grassmannians
Chris Fraser, Ian Le
We introduce combinatorial objects which are parameterized by the positive part of the tropical Grassmannian . Our method is to relate the Grassmannian to configuration sp…
math.CO2017
From dimers to webs
Chris Fraser, Thomas Lam, Ian Le
We formulate a higher-rank version of the boundary measurement map for weighted planar bipartite networks in the disk. It sends a network to a linear combination of SL-webs, an…
math.CO2017
Braid group symmetries of Grassmannian cluster algebras
Chris Fraser
We define an action of the extended affine d-strand braid group on the open positroid stratum in the Grassmannian Gr(k,n), for d the greatest common divisor of k and n. The action…