Gushel--Mukai varieties: intermediate Jacobians

We describe intermediate Jacobians of Gushel-Mukai varieties $X$ of dimensions 3 or 5: if $A$ is the Lagrangian space associated with $X$, we prove that the intermediate Jacobian of $X$ is isomorphic to the Albanese variety of the canonical double covering of any of the two dual Eisenbud-Popescu-Wal...

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Main Authors: Olivier Debarre, Alexander Kuznetsov
Format: Article
Language:English
Published: Association Epiga 2020-12-01
Series:Épijournal de Géométrie Algébrique
Subjects:
Online Access:https://epiga.episciences.org/6475/pdf
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author Olivier Debarre
Alexander Kuznetsov
author_facet Olivier Debarre
Alexander Kuznetsov
author_sort Olivier Debarre
collection DOAJ
description We describe intermediate Jacobians of Gushel-Mukai varieties $X$ of dimensions 3 or 5: if $A$ is the Lagrangian space associated with $X$, we prove that the intermediate Jacobian of $X$ is isomorphic to the Albanese variety of the canonical double covering of any of the two dual Eisenbud-Popescu-Walter surfaces associated with $A$. As an application, we describe the period maps for Gushel-Mukai threefolds and fivefolds.
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spelling doaj.art-46c251159c7b42daa138b34d30fefc592022-12-22T04:07:04ZengAssociation EpigaÉpijournal de Géométrie Algébrique2491-67652020-12-01Volume 410.46298/epiga.2020.volume4.64756475Gushel--Mukai varieties: intermediate JacobiansOlivier DebarreAlexander KuznetsovWe describe intermediate Jacobians of Gushel-Mukai varieties $X$ of dimensions 3 or 5: if $A$ is the Lagrangian space associated with $X$, we prove that the intermediate Jacobian of $X$ is isomorphic to the Albanese variety of the canonical double covering of any of the two dual Eisenbud-Popescu-Walter surfaces associated with $A$. As an application, we describe the period maps for Gushel-Mukai threefolds and fivefolds.https://epiga.episciences.org/6475/pdfmathematics - algebraic geometry14j45, 14j35, 14j40, 14m15
spellingShingle Olivier Debarre
Alexander Kuznetsov
Gushel--Mukai varieties: intermediate Jacobians
Épijournal de Géométrie Algébrique
mathematics - algebraic geometry
14j45, 14j35, 14j40, 14m15
title Gushel--Mukai varieties: intermediate Jacobians
title_full Gushel--Mukai varieties: intermediate Jacobians
title_fullStr Gushel--Mukai varieties: intermediate Jacobians
title_full_unstemmed Gushel--Mukai varieties: intermediate Jacobians
title_short Gushel--Mukai varieties: intermediate Jacobians
title_sort gushel mukai varieties intermediate jacobians
topic mathematics - algebraic geometry
14j45, 14j35, 14j40, 14m15
url https://epiga.episciences.org/6475/pdf
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