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arXiv · 2412.20748

Tropical intersection homology

Ryota Mikami
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Abstract

Numerical equivalence of algebraic cycles is defined abstractly by intersection numbers. Classically, for smooth complex proper toric varieties, the quotients by numerical equivalence with rational coefficients can be described geometrically as singular cohomology. They are also expressed in terms of tropical geometry, tropical cohomology, introduced by Itenberg-Katzarkov-Mikhalkin-Zharkov. This paper aims to generalize this to suitable pairs of smooth proper varieties and divisors by introducing a tropical analog of intersection homology.

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Ryota Mikami. 2026-05-13. Tropical intersection homology. https://arxiv.org/abs/2412.20748

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