Extensors and Neighbourhood Extensors

I. M. James
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I. M. James: Oxford University, Mathematical Institute

Chapter Chapter 8 in General Topology and Homotopy Theory, 1984, pp 224-243 from Springer

Abstract: Abstract In Chapter 6 the extension problem for mappings has been considered using the notion of cofibration. There is, however, a different approach to the subject which is also important. In this alternative approach the main restriction is placed on the codomain of the mappings in question. In fact it is necessary to restrict the class of domains to some extent as well. For what we are going to do it will be convenient to work with paracompact domains, although some of the results hold more generally for normal domains.

Keywords: Open Covering; Closed Subspace; Extension Property; Ordinary Theory; Paracompact Space (search for similar items in EconPapers)
Date: 1984
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DOI: 10.1007/978-1-4613-8283-6_9

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