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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(online) ISSN 0002-9939(print)

 

A version of Zabrodsky's lemma


Author: Jin-yen Tai
Journal: Proc. Amer. Math. Soc. 126 (1998), 1573-1578
MSC (1991): Primary 55P60
MathSciNet review: 1443169
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Abstract: Zabrodsky's Lemma says: Suppose given a fibrant space $Y$ and a homotopy fiber sequence $F\to E\to X$ with $X$ connected. If the map $Y=\operatorname {map}(*,Y)\to \operatorname {map}(F,Y) $ which is induced by $F\to *$ is a weak equivalence, then $\operatorname {map}(X,Y)\to \operatorname {map}(E,Y)$ is a weak equivalence. This has been generalized by Bousfield. We improve on Bousfield's generalization and give some applications.


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Additional Information

Jin-yen Tai
Affiliation: Department of Mathematics, Rutgers University, New Brunswick, New Jersey 08903
Address at time of publication: Department of Mathematics, Dartmouth College, Hanover, New Hampshire 03755
Email: jtai@math.rutgers.edu, jin-yen.tai@dartmouth.edu

DOI: http://dx.doi.org/10.1090/S0002-9939-98-04208-7
PII: S 0002-9939(98)04208-7
Received by editor(s): April 11, 1996
Received by editor(s) in revised form: October 30, 1996
Communicated by: Thomas Goodwillie
Article copyright: © Copyright 1998 American Mathematical Society