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Transactions of the American Mathematical Society
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From $\Gamma$-spaces to algebraic theories

Author(s): Bernard Badzioch
Journal: Trans. Amer. Math. Soc. 357 (2005), 1779-1799.
MSC (2000): Primary 55P48; Secondary 18C10
Posted: December 16, 2004
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Abstract: The paper examines semi-theories, that is, formalisms of the type of the $\Gamma$-spaces of Segal which describe homotopy structures on topological spaces. It is shown that for any semi-theory one can find an algebraic theory describing the same structure on spaces as the original semi-theory. As a consequence one obtains a criterion for establishing when two semi-theories describe equivalent homotopy structures.


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Additional Information:

Bernard Badzioch
Affiliation: Department of Mathematics, University of Minnesota, Minneapolis, Minnesota 55455
Address at time of publication: Department of Mathematics, University of Buffalo, SUNY, Buffalo, New York 14260-2900
Email: badzioch@math.umn.edu, badzioch@buffalo.edu

DOI: 10.1090/S0002-9947-04-03711-0
PII: S 0002-9947(04)03711-0
Received by editor(s): June 11, 2003
Posted: December 16, 2004
Copyright of article: Copyright 2004, American Mathematical Society
The copyright for this article reverts to public domain after 28 years from publication.


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