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math.CO2025
On universal quadratic inequalities for minors of TNN matrices
Vladimir I. Danilov, Alexander V. Karzanov, Gleb A. Koshevoy
For positive integers , we give a combinatorial characterization for the set of quadratic inequalities on minors that are valid for all totally nonnegative matri…
math.CO2025
On one generalization of stable allocations in a two-sided market
Alexander V. Karzanov
In the stable allocation problem on a two-sided market introduced and studied by Baiou and Balinski in the early 2000's, one is given a bipartite graph with capacities $b…