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Rational Reidemeister trace of an outer automorphism of finite orderSmrekar, JakaNaj ima grupa ▫$H$▫ tip ▫$FP$▫ nad racionalnimi števili in naj bo ▫$\phi\colon H\to H$▫ avtomorfizem, katerega razred v ▫${\rm Out}(H)$▫ je končnega reda in za katerega je Lefschetzevo število neke ... iteracije▫ $\phi^i$▫ različno od nič. Pokažemo, da je pri veljavnosti primerne različice Bassove domneve ta iteracija ▫$\phi^i$▫ konjugirana nekemu avtomorfizmu končnega reda in da ima presek množice negibnih točk avtomorfizma ▫$\phi$▫ in grupe ▫$H$▫ omejen eksponent. Če je ▫$H$▫ brez torzije, sledi, da je center HNN razširitve ▫$\{H,t\,\vert\,\forall h\in H:\,tht^{-1} = \phi(h)\}$▫ neskončna ciklična grupa. Ti rezultati so povezani z Geoghegan-Nicasovo Eulerjevo karakteristiko prvega reda grupe ▫$G$▫ s končnim Eilenberg-MacLaneovim kompleksom: to je morfizem ▫$\chi_1(G)$▫ iz centra grupe ▫$G$▫ v ▫$H_1(G;k)$▫, kjer je ▫$k$▫ kolobar koeficientov. Popolnoma določimo ▫$\chi_1(G)$▫ z racionalnimi koeficienti.Source: Journal of Pure and Applied Algebra. - ISSN 0022-4049 (Vol. 227, iss. 7, July 2023, art. 107350 (13 str.))Type of material - article, component part ; adult, seriousPublish date - 2023Language - englishCOBISS.SI-ID - 141555715
Author
Smrekar, Jaka
Topics
avtomorfizem končnega reda |
Reidemeistrova sled |
Hattori-Stallingsov rang |
Gottliebov izrek |
Eulerjeva karakteristika prvega reda |
Cookova ovira |
automorphism of finite order |
Reidemeister trace |
Hattori-Stallings rank |
Gottlieb’s theorem |
first order Euler characteristic |
Cooke’s obstruction
Author | Smrekar, Jaka |
Title | Rational Reidemeister trace of an outer automorphism of finite order |
Publication date | 2023-02-08 |
COBISS.SI-ID | 141555715 |
Publication version in repository | Publisher's version |
Publication licence | Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International |
Embargo | Immediate publication for public |
Project(s) from which the publication was funded
Title | Acronym | Project ID | Funder |
---|---|---|---|
Holomorfne parcialne diferencialne relacije | N1-0237-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
|
Analiza in geometrija | P1-0291-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
Files that belong to the publication
Link |
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https://www.sciencedirect.com/science/article/pii/S0022404923000336 |
https://repozitorij.uni-lj.si/IzpisGradiva.php?id=148644 |
source: Journal of Pure and Applied Algebra. - ISSN 0022-4049 (Vol. 227, iss. 7, July 2023, art. 107350 (13 str.))
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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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Smrekar, Jaka | 21969 |
Source: Personal bibliographies
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