English

Linear Tropicalizations

Algebraic Geometry 2015-11-05 v3 Combinatorics

Abstract

Let XX be a closed algebraic subset of An(K)\mathbb{A}^{n}(K) where KK is an algebraically closed field complete with respect to a nontrivial non-Archimedean valuation. We show that there is a surjective continuous map from the Berkovich space of XX to an inverse limit of a certain family of embeddings of XX called linear tropicalizations of XX. This map is injective on the subset of the Berkovich space XanX^{an} which contains all seminorms arising from closed points of XX. We show that the map is a homeomorphism if XX is a non-singular algebraic curve. Some applications of these results to transversal intersections are given. In particular we prove that there exists a tropical line arrangement which is realizable by a complex line arrangement but not realizable by any real line arrangement.

Keywords

Cite

@article{arxiv.1411.3833,
  title  = {Linear Tropicalizations},
  author = {Mustafa Hakan Gunturkun and Ali Ulas Ozgur Kisisel},
  journal= {arXiv preprint arXiv:1411.3833},
  year   = {2015}
}

Comments

10 pages. Major changes in Section 3: Proof of Theorem 3.1 was shortened and a new theorem about linear tropicalizations of smooth curves was added. More details were given for the proof of Theorem 4.2

R2 v1 2026-06-22T06:58:46.932Z