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2-Categorical aspects of strong shape
Authors:Luciano Stramaccia
Institution:Dipartimento di Matematica e Informatica, Universitá di Perugia, via Vanvitelli, I-06123 Perugia, Italy
Abstract:For every pair (C,K) of groupoid enriched categories, we define two related categories S(C,K) and SS(C,K). In the case (C,K)=(TOP,ANR) they are isomorphic, respectively, to the classical shape category Sh(TOP) of Mardeši? and Segal and to the strong shape category of topological spaces SSh(1)(TOP) of height 1, defined by Lisicá and Mardeši?. Moreover, for (C,K)=(CM,ANR), where CM is the category of compact metric spaces, there is an isomorphism SSh(CM)≅SS(CM,ANR). A new characterization of topological strong shape equivalences is also given.
Keywords:18B40  55P55  55P65  54C56  18B30  18D20  54B30
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