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Classification of framed links in 3-manifoldsCencelj, Matija, 1958- ; Repovš, Dušan, 1954- ; Skopenkov, Mikhail, 1983-Podan je kratek popoln dokaz naslednjega Pontryaginovega izreka, čigar originalni dokaz je bil zapleten in ni bil nikoli v podrobnostih objavljen. Naj bo ▫$M$▫ povezana orientirana sklenjena gladka ... 3-mnogoterost, ▫$L_1(M)$▫ naj bo množica vseh okvirjenih spletov v ▫$M$▫ do okvirjenega kobordizma natančno in naj bo deg: ▫$L_1(M) \to H_1(M;\mathbb Z)$▫ preslikava, ki okvirjen splet preslika vnjegov homološki razred. Potem za vsak ▫$\alpha \in H_1(M;\mathbb Z)$▫ obstaja injektivna korespondenca med množico ▫${\mathrm{deg}}^{-1}\alpha$▫ in grupo ▫$\mathbb Z_{2d(\alpha)}$▫, kjer je ▫$d(\alpha)$▫ deljivost projekcije ▫$\alpha$▫ na prosti del grupe ▫$H_1(M;\mathbb Z)$▫.Source: Proceedings of the Indian Academy of Sciences. Mathematical sciences. - ISSN 0253-4142 (Vol. 117, no. 3, 2007, str. 301-306)Type of material - article, component partPublish date - 2007Language - englishCOBISS.SI-ID - 14372185
Author
Cencelj, Matija, 1958- |
Repovš, Dušan, 1954- |
Skopenkov, Mikhail, 1983-
Topics
matematika |
topologija |
okvirjen kobordizem |
okvirjen splet |
okvirjenje |
normalni sveženj |
normalni Eulerjev razred |
homotopija |
klasifikacija preslikav |
kohomotopska množica |
stopnja preslikave |
Pontryagin-Thomova konstrukcija |
mathematics |
topology |
framed link |
framed cobordism |
framing |
normal bundle |
normal Euler class |
homotopy |
classification of maps |
cohomotopy set |
degree of a map |
Pontryagin-Thom construction
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source: Proceedings of the Indian Academy of Sciences. Mathematical sciences. - ISSN 0253-4142 (Vol. 117, no. 3, 2007, str. 301-306)
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Cencelj, Matija, 1958- | 03342 |
Repovš, Dušan, 1954- | 07083 |
Skopenkov, Mikhail, 1983- | ![]() |
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