Matroid psi classes.
Matroid psi classes.
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DOI:
10.1007/s00029-022-00771-5
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Ross D
中科院分区:
文献类型:
--
作者:
Dastidar J;Ross D
Motivated by the intersection theory of moduli spaces of curves, we introduce psi classes in matroid Chow rings and prove a number of properties that naturally generalize properties of psi classes in Chow rings of Losev-Manin spaces. We use these properties of matroid psi classes to give new proofs of (1) a Chow-theoretic interpretation for the coefficients of the reduced characteristic polynomials of matroids, (2) explicit formulas for the volume polynomials of matroids, and (3) Poincaré duality for matroid Chow rings.
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