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Journal Article
Fixed Set Systems of Equivariant Infinite Loop Spaces
Steven R. Costenoble and Stefan Waner
Transactions of the American Mathematical Society
Vol. 326, No. 2 (Aug., 1991), pp. 485-505
Published
by: American Mathematical Society
DOI: 10.2307/2001770
https://www.jstor.org/stable/2001770
Page Count: 21
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Topics: Endless loops, Monads, Functors, Mathematical induction, Topological spaces, Mathematical theorems, Topology, Equivalence relation, Geometry
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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.
Transactions of the American Mathematical Society
© 1991 American Mathematical Society