1979
DOI: 10.1007/bfb0088077
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Applications and generalizations of the approximation theorem

Abstract: In its basic form, the approximation theorem referred to provides simple n n combinatorial models for spaces ~ E X, where X is a connected based space.The first such result was given by James [26], who showed that ~EX is equivalent to the James construction MX.

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Cited by 5 publications
(6 citation statements)
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“…between loop spaces. As observed in [16], such comparisons are quite trivial verifications in view of the very simple and explicit nature of the maps g" and an. To define the model level analogs of loop sums and smash products, and for other purposes, we first note that A has sums and products, and then introduce notions of additive and multiplicative pairings of coefficient systems.…”
Section: ¡5»0 'mentioning
confidence: 99%
See 1 more Smart Citation
“…between loop spaces. As observed in [16], such comparisons are quite trivial verifications in view of the very simple and explicit nature of the maps g" and an. To define the model level analogs of loop sums and smash products, and for other purposes, we first note that A has sums and products, and then introduce notions of additive and multiplicative pairings of coefficient systems.…”
Section: ¡5»0 'mentioning
confidence: 99%
“…Proofs of the above statements may be found in [16,5,20 and 4]; they need not concern us here. What does concern us is how these maps relate to various standard maps (loop sums, smash products, etc.)…”
Section: ¡5»0 'mentioning
confidence: 99%
“…Additive iterated and infinite loop space theory This includes operads, the two-sided bar construction of monads, iterated and infinite loop space theory via operads [7], [12], [18], [28], [29], homology of iterated and infinite loop spaces [11], [17], [39] the work on classifying spaces and fibrations [15], on spectra associated with permutative categories [13], [23], and the joint work of May and Thomason on uniqueness of infinite loop space machines [22], [32].…”
Section: Prefacementioning
confidence: 99%
“…This structure leads (in [12]) to simple combinatorial approximations to spaces of the form QP^ÏPX. Mahowald [11] found a remarkable way to exploit this structure to construct infinite families of elements in the stable homotopy groups of spheres.…”
mentioning
confidence: 99%
“…That is, given a suitably structured space X, one can manufacture "deloopings" B n X and equivalences between X and Q"B n X. There are three main machines for carrying out this program, due to Boardman and Vogt, Segal, and myself [3], [22], [12]. All three may be viewed as exercises in topological algebra, the study of algebraic structure on topological spaces.…”
mentioning
confidence: 99%