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math.CO2026
On integral polytopes related to Edmonds' problem
Hiroshi Hirai
In this paper, we study polyhedral aspects on commutative and noncommutative Edmonds' problems for computing the rank of linear symbolic matrix . We regar…
cs.DS2026
Horospherically convex optimization for fractional subspace packing and its applications
Hiroshi Hirai
In this paper, we address a semi-infinite LP relaxation of the vector-subspace packing problem. This is a higher-dimensional generalization of the fractional linear matroid parity…