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We prove that if a multiple trigonometric series is spherically Abel summable everywhere to an everywhere finite function $f(x)$ which is bounded below by an integrable function, then the series is the Fourier series of $f(x)$ if the…

Classical Analysis and ODEs · Mathematics 2007-05-23 J. Marshall Ash , Gang Wang

A new multidimensional optimization problem is considered in the tropical mathematics setting. The problem is to minimize a nonlinear function defined on a finite-dimensional semimodule over an idempotent semifield and given by a conjugate…

Optimization and Control · Mathematics 2013-11-12 Nikolai Krivulin

To quantify the geometric expressivity of transformers, we introduce a tropical geometry framework to characterize their exact spatial partitioning capabilities. By modeling self-attention as a vector-valued tropical rational map, we prove…

Machine Learning · Computer Science 2026-04-17 Ye Su , Yong Liu

We consider toric maximum likelihood estimation over the field of Puiseux series and study critical points of the likelihood function using tropical methods. This problem translates to finding the intersection points of a tropical affine…

Algebraic Geometry · Mathematics 2025-08-08 Emma Boniface , Karel Devriendt , Serkan Hoşten

After endowing the space of diagrams of probability spaces with an entropy distance, we study its large-scale geometry by identifying the asymptotic cone as a closed convex cone in a Banach space. We call this cone the tropical cone, and…

Dynamical Systems · Mathematics 2019-05-17 Rostislav Matveev , Jacobus W. Portegies

In this paper we further develop the theory of matrices over the extended tropical semiring. Introducing a notion of tropical linear dependence allows for a natural definition of matrix rank in a sense that coincides with the notions of…

Commutative Algebra · Mathematics 2008-09-22 Zur Izhakian

We investigate a canonical extension of a conventional combinatorial notion of reduced divisors to a notion of tropical projections, which can be defined as the unique minimizers of the so-called $B$-pseudonorms with respect to compact…

Combinatorics · Mathematics 2018-12-04 Ye Luo

Complex algebraic varieties become easy piecewise-linear objects after passing to the so-called tropical limit. Geometry of these limiting objects is known as tropical geometry. In this short survey we take a look at motivation and…

Algebraic Geometry · Mathematics 2011-11-18 I. Itenberg , G. Mikhalkin

Generalizing supertropical algebras, we present a "layered" structure, "sorted" by a semiring which permits varying ghost layers, and indicate how it is more amenable than the "standard" supertropical construction in factorizations of…

Commutative Algebra · Mathematics 2011-08-16 Zur Izhakian , Manfred Knebusch , Louis Rowen

A tropical (or min-plus) semiring is a set $\mathbb{Z}$ (or $\mathbb{Z \cup \{\infty\}}$) endowed with two operations: $\oplus$, which is just usual minimum, and $\odot$, which is usual addition. In tropical algebra the vector $x$ is a…

Computational Complexity · Computer Science 2012-04-23 Dima Grigoriev , Vladimir V. Podolskii

This is a survey on an analogue of tropical convexity developed over the max-min semiring, starting with the descriptions of max-min segments, semispaces, hyperplanes and an account of separation and non-separation results based on…

Metric Geometry · Mathematics 2019-03-26 Viorel Nitica , Sergei Sergeev

We introduce the notion of tropical area of a tropical curve defined in an open subset of $\mathbb R^n$. We prove that the number of vertices of a tropical curve is bounded by the area of the curve. The approach is totally elementary yet…

Combinatorics · Mathematics 2020-11-24 Tony Yue Yu

Tropical convective clouds evolve over a wide range of temporal and spatial scales, and this makes them difficult to simulate numerically. Here, we propose that their statistical properties can be derived within a simplified…

Atmospheric and Oceanic Physics · Physics 2019-01-09 Timothy J. Garrett , Ian B. Glenn , Steven K. Krueger

Systems biology uses large networks of biochemical reactions to model the functioning of biological cells from the molecular to the cellular scale. The dynamics of dissipative reaction networks with many well separated time scales can be…

Molecular Networks · Quantitative Biology 2013-05-28 Vincent Noel , Dima Grigoriev , Sergei Vakulenko , Ovidiu Radulescu

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

We give an overview of recently implemented polymake features for computations in tropical geometry. The main focus is on explicit examples rather than technical explanations. Our computations employ tropical hypersurfaces, moduli of…

Algebraic Geometry · Mathematics 2018-10-30 Simon Hampe , Michael Joswig

The tropical Nevanlinna theory is Nevanlinna theory for tropical functions or maps over the max-plux semiring by using the approach of complex analysis. The main purpose of this paper is to study the second main theorem with tropical…

Complex Variables · Mathematics 2026-01-29 Tingbin Cao , Jianhua Zheng

It has been proposed that the number of tropical cyclones as a function of the energy they release is a decreasing power-law function, up to a characteristic energy cutoff determined by the spatial size of the ocean basin in which the storm…

Atmospheric and Oceanic Physics · Physics 2011-03-25 A. Corral

We show that the asymptotic behavior of the two main competing notions of rank of a linear series on a tropical curve is governed by asymptotic invariants, closely paralleling the theory of volumes in algebraic geometry. We introduce and…

Algebraic Geometry · Mathematics 2026-05-22 Ana Maria Botero , Alex Küronya , Eduardo Vital

The growth of tropical geometry has generated significant interest in the tropical semiring in the past decade. However, there are other semirings in tropical algebra that provide more information, such as the symmetrized (max, +),…

Commutative Algebra · Mathematics 2018-10-09 Sara Kalisnik Verovsek , Davorin Lesnik
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