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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2024 MCQ for Proceedings of the American Mathematical Society is 0.85.

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Topological manifold bundles and the $A$-theory assembly map
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by George Raptis and Wolfgang Steimle
Proc. Amer. Math. Soc. 148 (2020), 3787-3799
DOI: https://doi.org/10.1090/proc/15014
Published electronically: April 22, 2020

Abstract:

We give a new proof of an index theorem for fiber bundles of compact topological manifolds due to Dwyer, Weiss, and Williams, which asserts that the parametrized $A$-theory characteristic of such a fiber bundle factors canonically through the assembly map of $A$-theory. Furthermore our main result shows a refinement of this statement by providing such a factorization for an extended $A$-theory characteristic, defined on the parametrized topological cobordism category. The proof uses a convenient framework for bivariant theories and recent results of Gomez-Lopez and Kupers on the homotopy type of the topological cobordism category. We conjecture that this lift of the extended $A$-theory characteristic becomes highly connected as the manifold dimension increases.
References
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Bibliographic Information
  • George Raptis
  • Affiliation: Fakultät für Mathematik, Universität Regensburg, 93040 Regensburg, Germany
  • MR Author ID: 875889
  • Email: georgios.raptis@ur.de
  • Wolfgang Steimle
  • Affiliation: Institut für Mathematik, Universität Augsburg, 86135 Augsburg, Germany
  • MR Author ID: 908085
  • Email: wolfgang.steimle@math.uni-augsburg.de
  • Received by editor(s): August 2, 2019
  • Received by editor(s) in revised form: January 17, 2020
  • Published electronically: April 22, 2020
  • Additional Notes: The first author was supported by the SFB 1085 – Higher Invariants (University of Regensburg) funded by the DFG.
    The second author was partially supported by the SPP 2026 – Geometry at infinity funded by the DFG
  • Communicated by: Mark Behrens
  • © Copyright 2020 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 148 (2020), 3787-3799
  • MSC (2010): Primary 19D10, 57R90
  • DOI: https://doi.org/10.1090/proc/15014
  • MathSciNet review: 4127825