Linear Tropicalizations
Abstract
Let be a closed algebraic subset of where 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 to an inverse limit of a certain family of embeddings of called linear tropicalizations of . This map is injective on the subset of the Berkovich space which contains all seminorms arising from closed points of . We show that the map is a homeomorphism if 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.
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