Publication: Internal fundamental sequences and approximative retracts
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Publication Date
1984
Authors
Laguna, V. F.
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Elsevier Science
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Abstract
We introduce the notion of internal fundamental sequence and prove that any shape morphism from an arbitrary compactum X to an internally movable compactum Y is induced by an internal fundamental sequence. We use this special kind of fundamental sequences to give characterizations and some properties of AANRc-sets and AANR,-sets. The paper ends with a section devoted to internal FANR’s.
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