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In this paper we study algorithmic aspects of tropical intersection theory. We analyse how divisors and intersection products on tropical cycles can actually be computed using polyhedral geometry. The main focus of this paper is the study…

Algebraic Geometry · Mathematics 2013-10-29 Simon Hampe

We investigate the real algebraic complexity of contours of amoebas associated with algebraic hypersurfaces and complete intersections in complex algebraic tori. Motivated by the foundational estimates of Lang--Shapiro--Shustin \cite{LSS},…

Algebraic Geometry · Mathematics 2026-05-26 Mounir Nisse

The topology of amoebas of complex algebraic hypersurfaces is deeply connected to the combinatorics of the Newton polytope and the convex geometry of the Ronkin function. A long-standing conjecture of Passare and Rullgard asserts that the…

Algebraic Geometry · Mathematics 2026-03-24 Mounir Nisse

We show that the Hilbert polynomial of a Calabi-Yau hypersurface $Z$ in a smooth toric variety $M$ associated to a convex polytope $\Delta$ is given by a lattice point count in the polytope boundary $\partial \Delta,$ just as the Hilbert…

Algebraic Geometry · Mathematics 2026-01-21 Jonathan Weitsman

There is a well known correspondence between the triangle inequality for a distance function on a finite set, and idempotency of an associated matrix over the tropical semiring. Recent research has shed new light on the structure…

Rings and Algebras · Mathematics 2012-03-13 Marianne Johnson , Mark Kambites

In a recent paper, Matthew Baker and Oliver Lorscheid showed that Descartes's Rule of Signs and Newton's Polygon Rule can both be interpreted as multiplicities of polynomials over hyperfields. Hyperfields are a generalization of fields…

Rings and Algebras · Mathematics 2023-04-04 Trevor Gunn

We construct immersions of trivalent abstract tropical curves in the Euclidean plane and embeddings of all abstract tropical curves in higher dimensional Euclidean space. Since not all curves have an embedding in the plane, we define the…

Combinatorics · Mathematics 2018-06-18 Dustin Cartwright , Andrew Dudzik , Madhusudan Manjunath , Yuan Yao

We introduce tropical complexes, as an enrichment of the dual complex of a degeneration with additional data from non-transverse intersection numbers. We define cycles, divisors, and linear equivalence on tropical complexes, analogous both…

Algebraic Geometry · Mathematics 2019-09-13 Dustin Cartwright

We define the tropical Tevelev degrees, $\mathsf{Tev}_g^{trop}$, as the degree of a natural finite morphism between certain tropical moduli spaces, in analogy to the algebraic case. We develop an explicit combinatorial construction that…

Algebraic Geometry · Mathematics 2026-04-15 Renzo Cavalieri , Erin Dawson

Pasque et al. showed that using a tropical symmetric metric as an activation function in the last layer can improve the robustness of convolutional neural networks (CNNs) against state-of-the-art attacks, including the Carlini-Wagner…

Machine Learning · Computer Science 2025-03-31 Gillian Grindstaff , Julia Lindberg , Daniela Schkoda , Miruna-Stefana Sorea , Ruriko Yoshida

We give an introduction to Tropical Geometry and prove some results in Tropical Intersection Theory. The first part of this paper is an introduction to tropical geometry aimed at researchers in Algebraic Geometry from the point of view of…

Algebraic Geometry · Mathematics 2010-06-22 Eric Katz

The motivic nearby fiber is an invariant obtained from degenerating a complex variety over a disc. It specializes to the Euler characteristic of the original variety but also contains information on the variation of Hodge structure…

Algebraic Geometry · Mathematics 2021-10-05 Eric Katz , Alan Stapledon

This article discusses a combinatorial extension of tropical intersection theory to spaces given by glueing quotients of partially open convex polyhedral cones by finitely many automorphisms. This extension is done in terms of linear…

Combinatorics · Mathematics 2025-01-10 Diego A. Robayo Bargans

We show how to equip the cone complexes of toroidal embeddings with additional structure that allows to define a balancing condition for weighted subcomplexes. We then proceed to develop the foundations of an intersection theory on cone…

Algebraic Geometry · Mathematics 2018-02-07 Andreas Gross

We consider a minimum enclosing and maximum inscribed tropical balls for any given tropical polytope over the tropical projective torus in terms of the tropical metric with the max-plus algebra. We show that we can obtain such tropical…

Combinatorics · Mathematics 2023-03-07 David Barnhill , Ruriko Yoshida , Keiji Miura

In this paper, we establish effective equidistribution of transverse intersection points between properly immersed totally geodesic submanifolds of complementary dimensions in a finite-volume hyperbolic manifold with respect to the…

Dynamical Systems · Mathematics 2025-12-02 Tina Torkaman , Yongquan Zhang

We introduce tropical singular intersection homologies (non-GM and GM) with the tropical coefficients on rational polyhedral spaces using their filtrations. We investigate their fundamental properties. In the non-GM case, we give a…

Algebraic Geometry · Mathematics 2026-03-30 Junta Kamiya

Splice type surface singularities were introduced by Neumann and Wahl as a generalization of the class of Pham-Brieskorn-Hamm complete intersections of dimension two. Their construction depends on a weighted tree called a splice diagram. In…

Algebraic Geometry · Mathematics 2023-12-22 Maria Angelica Cueto , Patrick Popescu-Pampu , Dmitry Stepanov

D. Grigoriev-G. Koshevoy recently proved that tropical Schur polynomials have (at worst) polynomial tropical semiring complexity. They also conjectured tropical skew Schur polynomials have at least exponential complexity; we establish a…

Combinatorics · Mathematics 2020-06-02 Alexander Woo , Alexander Yong

We show that finding the classical bound of broad families of Bell inequalities can be naturally framed as the contraction of an associated tensor network, but in tropical algebra, where the sum is replaced by the minimum and the product is…

Quantum Physics · Physics 2026-02-13 Mengyao Hu , Jordi Tura
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