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5 - Monoidal Bousfield Localizations and Algebras over Operads

Published online by Cambridge University Press:  29 October 2021

Scott Balchin
Affiliation:
Max-Planck-Institut für Mathematik, Bonn
David Barnes
Affiliation:
Queen's University Belfast
Magdalena Kędziorek
Affiliation:
Radboud Universiteit Nijmegen
Markus Szymik
Affiliation:
Norwegian University of Science and Technology, Trondheim
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Summary

We give conditions on a monoidal model category M and on a set of maps C so that the Bousfield localisation of M with respect to C preserves the structure of algebras over various operads. This problem was motivated by an example that demonstrates that, for the model category of equivariant spectra, preservation does not come for free. We discuss this example in detail and provide a general theorem regarding when localisation preserves P-algebra structure for an arbitrary operad P. We characterise the localisations that respect monoidal structure and prove that all such localisations preserve algebras over cofibrant operads. As a special case we recover numerous classical theorems about preservation of algebraic structure under localisation, in the context of spaces, spectra, chain complexes, and equivariant spectra. To demonstrate our preservation result for non-cofibrant operads, we work out when localisation preserves commutative monoids and the commutative monoid axiom. Finally, we provide conditions so that localisation preserves the monoid axiom.

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Publisher: Cambridge University Press
Print publication year: 2021

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