English

Derived invariants arising from the Albanese map

Algebraic Geometry 2018-12-18 v2

Abstract

Let aX:XAlbXa_X:X\rightarrow \mathrm{Alb}\, X be the Albanese map of a smooth complex projective variety. Roughly speaking in this note we prove that for all i0i \geq 0 and αPic0X\alpha\in \mathrm{Pic}^0\, X, the cohomology ranks hi(AlbX,aXωXPα)h^i(\mathrm{Alb}\, X, \,{a_X}_* \omega_X\otimes P_\alpha) are derived invariants. In the case of varieties of maximal Albanese dimension this proves conjectures of Popa and Lombardi-Popa -including the derived invariance of the Hodge numbers h0,jh^{0,j} -- and a weaker version of them for arbitrary varieties. Finally we provide an application to derived invariance of certain irregular fibrations.

Keywords

Cite

@article{arxiv.1807.09854,
  title  = {Derived invariants arising from the Albanese map},
  author = {Federico Caucci and Giuseppe Pareschi},
  journal= {arXiv preprint arXiv:1807.09854},
  year   = {2018}
}

Comments

16 pages. Final version to appear on Algebraic Geometry

R2 v1 2026-06-23T03:14:37.820Z