English

Effective faithful tropicalizations associated to adjoint linear systems

Algebraic Geometry 2017-01-16 v2

Abstract

Let RR be a complete discrete valuation ring of equi-characteristic zero with fractional field KK. Let XX be a connected, smooth projective variety of dimension dd over KK, and let LL be an ample line bundle over XX. We assume that there exist a regular strictly semistable model X\mathscr{X} of XX over RR and a relatively ample line bundle L\mathscr{L} over X\mathscr{X} with LXL\mathscr{L}|_{X} \cong L. Let S(X)S(\mathscr{X}) be the skeleton associated to X\mathscr{X} in the Berkovich analytification XanX^{\mathrm{an}} of XX. In this article, we study when S(X)S(\mathscr{X}) is faithfully tropicalized into tropical projective space by the adjoint linear system LmωX|L^{\otimes m} \otimes \omega_X|. Roughly speaking, our results show that, if mm is an integer such that the adjoint bundle is basepoint free, then the adjoint linear system admits a faithful tropicalization of S(X)S(\mathscr{X}).

Cite

@article{arxiv.1612.01099,
  title  = {Effective faithful tropicalizations associated to adjoint linear systems},
  author = {Shu Kawaguchi and Kazuhiko Yamaki},
  journal= {arXiv preprint arXiv:1612.01099},
  year   = {2017}
}

Comments

16 pages. Presentation has been changed. Some minor errors have been corrected

R2 v1 2026-06-22T17:12:50.649Z