Generalised automorphic sheaves and the proportionality principle of Hirzebruch-Mumford

Abstract: We axiomatise the algebraic properties of toroidal compactifications of (mixed) Shimura varieties and their automorphic vector bundles. A notion of generalised automorphic sheaf is proposed which includes sheaves of (meromorphic) sections of automorphic vector bundles with prescribed vanishing and pole orders along strata in the compactification, and their quotients. These include, for instance, sheaves of Jacobi forms and weakly holomorphic modular forms. Using this machinery, we give a short and purely algebraic proof of the proportionality theorem of Hirzebruch and Mumford

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch
Notes
Journal of the Institute of Mathematics of Jussieu. - 23, 4 (2024) , 1567-1605, ISSN: 1475-3030

Event
Veröffentlichung
(where)
Freiburg
(who)
Universität
(when)
2023
Creator

DOI
10.1017/s1474748023000300
URN
urn:nbn:de:bsz:25-freidok-2409889
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
15.08.2025, 7:37 AM CEST

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Associated

Time of origin

  • 2023

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