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math.CO2026
More Vertices of the Tristochastic Polytope
Nati Linial, Zur Luria, Maya Trakhtman
The doubly stochastic matrices constitute a polytope in , and by Birkhoff's theorem, its vertex set coincides with the set of order- permutation ma…
math.CO2026
Metric Approximations of Consistent Path Systems
Daniel Cizma, Nati Linial
A path system in a graph is a collection of paths, with exactly one path between any two vertices in . A path system is said to be consistent if it is cl…