English

A note on semiorthogonal decompositions for Fano fibrations

Algebraic Geometry 2022-03-01 v2

Abstract

Fano fibrations arise naturally in the birational classification of algebraic varieties. We show that these morphisms always induce a semiorthogonal decomposition on the derived category of the fibred space, extending classic results such as Orlov's projective bundle formula to the non-flat and singular case.

Keywords

Cite

@article{arxiv.2002.10987,
  title  = {A note on semiorthogonal decompositions for Fano fibrations},
  author = {Pedro Núñez},
  journal= {arXiv preprint arXiv:2002.10987},
  year   = {2022}
}

Comments

8 pages. Updated version according to referee reports; accepted for publication in the journal Geometriae Dedicata

R2 v1 2026-06-23T13:53:23.417Z