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math.CO2026
The singular cohomology ring of a uniform matroid: combinatorics and Lefschetz properties
Kyle Binder
The singular cohomology ring of a matroid is an algebraic invariant which generalizes the Chow ring of a matroid. We study combinatorial and Lefschetz properties of the singular co…
math.CO2026
The Singular Cohomology Ring of a Matroid
Kyle Binder
We introduce the singular cohomology ring of a matroid which extends the Chow ring of a matroid. This is defined as the singular cohomology ring of a certain quasi-projective toric…