Vol. 15, No. 10, 2021

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Precobordism and cobordism

Toni Annala

Vol. 15 (2021), No. 10, 2571–2646
DOI: 10.2140/ant.2021.15.2571

The purpose of this article is to compare several versions of bivariant algebraic cobordism constructed previously by the author and others. In particular, we show that a simple construction based on the universal precobordism theory of Annala and Yokura agrees with the more complicated theory of bivariant derived algebraic cobordism constructed earlier by the author, and that both of these theories admit a Grothendieck transformation to operational cobordism constructed by Luis González and Karu over fields of characteristic 0. The proofs are partly based on convenient universal characterizations of several cobordism theories, which should be of independent interest. Using similar techniques, we also strengthen a result of Vezzosi on operational derived K-theory. In the appendix, we give a detailed construction of virtual pullbacks in algebraic bordism, filling the gaps in the construction of Lowrey and Schürg.

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algebraic cobordism, bivariant theories, derived deformation to normal bundle
Mathematical Subject Classification
Primary: 14F43
Secondary: 14A99, 14C25
Received: 1 July 2020
Revised: 26 January 2021
Accepted: 13 March 2021
Published: 8 February 2022
Toni Annala
Department of Mathematics
University of British Columbia
Vancouver, BC