14 citations · 22 across the 2 of their papers we have counts for
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math.CO2020★ 8 cited
Shard polytopes
Arnau Padrol, Vincent Pilaud, Julian Ritter
For any lattice congruence of the weak order on permutations, N. Reading proved that gluing together the cones of the braid fan that belong to the same congruence class defines a c…
math.CO2020★ 14 cited
Removahedral congruences versus permutree congruences
Doriann Albertin, Vincent Pilaud, Julian Ritter
The associahedron is classically constructed as a removahedron, i.e. by deleting inequalities in the facet description of the permutahedron. This removahedral construction extends…