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Transactions of the American Mathematical Society

ISSN 1088-6850(online) ISSN 0002-9947(print)

 

 

Fixed set systems of equivariant infinite loop spaces


Authors: Steven R. Costenoble and Stefan Waner
Journal: Trans. Amer. Math. Soc. 326 (1991), 485-505
MSC: Primary 55P91; Secondary 55N91, 55P47, 55R35
MathSciNet review: 1012523
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Abstract: We develop machinery enabling us to show that suitable $ G$-spaces, including the equivariant version of $ BF$, are equivariant infinite loop spaces. This involves a "recognition principle" for systems of spaces which behave formally like the system of fixed sets of a $ G$-space; that is, we give a necessary and sufficient condition for such a system to be equivalent to the fixed set system of an equivariant infinite loop space. The advantage of using the language of fixed set systems is that one can frequently replace the system of fixed sets of an actual $ G$-space by an equivalent formal system which is considerably simpler, and which admits the requisite geometry necessary for delooping. We also apply this machinery to construct equivariant Eilenberg-Mac Lane spaces corresponding to Mackey functors.


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DOI: https://doi.org/10.1090/S0002-9947-1991-1012523-4
Article copyright: © Copyright 1991 American Mathematical Society