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Tropical secant varieties of linear spaces

2004/05/07 by Mike Develin, Develin, Mike
Computer Science · Mathematics · #52B05 #52B99 #Advanced Differential Equations and Dynamical Systems #Combinatorics (math.CO) #FOS: Mathematics #Polynomial and algebraic computation #Tensor decomposition and applications #math.CO #msc:52B05 #msc:52B99

paper · pdf · doi:10.48550/arxiv.math/0405115

11 pages

arxiv created 2004/05/07 · openalex publication_date 2004/05/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this paper, we investigate tropical secant varieties of ordinary linear spaces. These correspond to the log-limit sets of ordinary toric varieties; we show that their interesting parts are combinatorially isomorphic to a certain natural subcomplex of the complex of regular subdivisions of a corresponding point set, and we display the range of behavior of this object. We also use this characterization to reformulate the question of determining Barvinok rank into a question regarding regular subdivisions of products of simplices.

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