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Transactions of the American Mathematical Society

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Homotopical complexity and good spaces

Authors: M. Intermont and J. Strom
Journal: Trans. Amer. Math. Soc. 359 (2007), 687-700
MSC (2000): Primary 55Q05
Published electronically: August 16, 2006
MathSciNet review: 2255193
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Abstract: This paper is an exploration of two ideas in the study of closed classes: the $ A$-complexity of a space $ X$ and the notion of good spaces (spaces $ A$ for which $ \mathcal{C}(A) = \overline{\mathcal{C}(A)}$). A variety of formulae for the computation of complexity are given, along with some calculations. Good spaces are characterized in terms of the functors $ CW_A$ and $ P_A$. The main result is a countable upper bound for $ \Sigma A$-complexity when $ A$ is a good space.

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Additional Information

M. Intermont
Affiliation: Department of Mathematics, Kalamazoo College, Kalamazoo, Michigan 49006

J. Strom
Affiliation: Department of Mathematics, Western Michigan University, Kalamazoo, Michigan 49008

Keywords: Closed class, complexity, homotopy colimit
Received by editor(s): June 10, 2004
Received by editor(s) in revised form: November 23, 2004
Published electronically: August 16, 2006
Article copyright: © Copyright 2006 American Mathematical Society
The copyright for this article reverts to public domain 28 years after publication.

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