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Title: 2-vector bundles (English)
Author: Waldorf, Konrad
Author: Kristel, Peter
Author: Ludewig, Matthias
Language: English
Journal: Higher Structures
ISSN: 2209-0606
Volume: 9
Issue: 1
Year: 2025
Pages: 36-87
Summary lang: English
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Category: math
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Summary: We develop a ready-to-use comprehensive theory for (super) 2-vector bundles over smooth manifolds. It is based on the bicategory of (super) algebras, bimodules, and intertwiners as a model for 2-vector spaces. We discuss symmetric monoidal structures and the corresponding notions of dualizability, and we derive a classification in terms of Cech cohomology with values in a crossed module. One important feature of our 2-vector bundles is that they contain bundle gerbes as well as ordinary algebra bundles as full sub-bicategories, and hence provide a unifying framework for these so far distinct objects. We provide several examples of isomorphisms between bundle gerbes and algebra bundles, coming from representation theory, twisted $K$-theory, and spin geometry. (English)
Keyword: Super algebras
Keyword: bimodules
Keyword: bundle gerbes
Keyword: bicategories
Keyword: Morita equivalence
Keyword: 2 Stacks
Keyword: descent
Keyword: crossed modules
Keyword: Clifford algebras
MSC: 16D90
MSC: 18N10
MSC: 53C27
MSC: 55R65
idZBL: Zbl 08141783
idMR: MR4918785
DOI: 10.21136/HS.2025.02
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Date available: 2026-03-13T14:14:51Z
Last updated: 2026-03-13
Stable URL: http://hdl.handle.net/10338.dmlcz/153483
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