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Fine homotopy equivalence and injectionAgeev, Sergej Mihajlovič, 1957- ; Repovš, Dušan, 1954-Članek je posvečen problemu F. D. Ancela o sovpadanju razredov finih homotopskih ekvivalenc in ekvivalenc med metričnimi prostori. Glavni rezultat se glasi: Bodi ▫$f: X\to Y$▫ preslikava med ... metričnima prostoroma in denimo, da za vsako pokritje ▫$\sigma \in {\rm cov}Y$▫ obstaja taka preslikava ▫$g: Y\to X$▫, da sta ▫${\rm id}_Y$▫ in ▫$f \circ g$▫ ▫$\sigma$▫-blizu, ▫${\rm id}_X$▫ in ▫$g \circ f$▫ sta ▫$f_{-1}(\sigma)$▫-homotopni in ▫$f \simeq f\circ g\circ f \; [{\rm rel}o]$▫. Potem je ▫$f$▫ fina homotopska ekvivalenca, če je ▫$X$▫ poln za neko metriko ▫$d$▫.Source: Mathematical notes = Matematicheskie zametki. - ISSN 1067-9073 (Vol. 65, no. 6, 1999, str. 770-772)Type of material - article, component partPublish date - 1999Language - englishCOBISS.SI-ID - 9661785
Author
Ageev, Sergej Mihajlovič, 1957- |
Repovš, Dušan, 1954-
Topics
matematika |
topologija |
homotopska ekvivalenca |
celičasta preslikava |
absolutni okolični retrakt |
polni metrični prostor |
mathematics |
topology |
homotopy equivalence |
cell-like map |
absolute neighborhood retract |
complete metric space
source: Mathematical notes = Matematicheskie zametki. - ISSN 1067-9073 (Vol. 65, no. 6, 1999, str. 770-772)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Ageev, Sergej Mihajlovič, 1957- | 15530 |
Repovš, Dušan, 1954- | 07083 |
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