Irregular fibrations of derived equivalent varieties

We study the behavior of irregular fibrations of a variety under derived equivalence of its bounded derived category. In particular, we prove the derived invariance of the existence of an irregular fibration over a variety of general type, extending the case of irrational pencils onto curves of genus g\geq 2 . We also prove that a derived equivalence of such fibrations induces a derived equivalence between their general fibers.

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Journal
Revista Matemática Iberoamericana
Published
2025-03-14
DOI
https://doi.org/10.4171/rmi/1546
Primary Topic
Elasticity and Material Modeling
Type
article
Field-Weighted Citation Impact
0.00

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article

Irregular fibrations of derived equivalent varieties

Federico Caucci, Luigi Lombardi
Revista Matemática Iberoamericana
Elasticity and Material Modeling
article

Irregular fibrations of derived equivalent varieties

Federico Caucci, Luigi Lombardi
article en

Abstract

We study the behavior of irregular fibrations of a variety under derived equivalence of its bounded derived category. In particular, we prove the derived invariance of the existence of an irregular fibration over a variety of general type, extending the case of irrational pencils onto curves of genus g\geq 2 . We also prove that a derived equivalence of such fibrations induces a derived equivalence between their general fibers.

Revista Matemática IberoamericanaVol. 41(3)
University of Rome Tor Vergata (IT), University of Milan (IT)
Istituto Nazionale di Alta Matematica "Francesco Severi", Università degli Studi di Milano, Fudan University, Università degli Studi di Roma Tor Vergata, Gruppo Nazionale per le Strutture Algebriche, Geometriche e le loro Applicazioni, Division of Mathematical Sciences
Openalex Percentile: Top 96%
Elasticity and Material Modeling
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