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math.AG2026
Algebraic cobordism rings of wonderful varieties and matroids
Raj Gandhi, Ethan Partida
We give two combinatorial presentations for the algebraic cobordism ring of the toric variety of the Bergman fan of any loopless matroid . As a consequence of our prese…
math.AG2026
Hodge theory for combinatorial projective bundles
Matt Larson, Ethan Partida
We prove the Hard Lefschetz theorem and Hodge-Riemann relations for certain rings which resemble the cohomology rings of projectivizations of globally generated vector bundles over…