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Resolving vertices of graphs with differencesPeterin, Iztok ...Standardna (vozliščna) metrična dimenzija grafa ▫$G$▫ je definirana kot kardinalnost najmanjše množice ▫$S\subseteq V(G)$▫, kjer imata poljubni vozlišči grafa ▫$G$▫ različno razdaljo do vsaj enega ... vozlišča iz ▫$S$▫. Njena generalizacija je ▫$k$▫-metrična dimenzija, kjer zahtevamo, da ima vsak par vozlišč različne razdalje do vsak ▫$k$▫ vozlišč iz ▫$S$▫. V tem delu vpeljemo šibko ▫$k$▫-metrično dimenzijo grafa ▫$G$▫, ki je minimalna kardinalnost množice ▫$S$▫, za katero za poljubni vozlišči ▫$x$▫ in ▫$y$▫ iz ▫$G$▫ zahtevamo, da je ▫$\sum_{s\in S}|d(x,s)-d(y,x)|\geq k$▫. Ta dimenzija je ''močnejša'' kot metrična dimenzija, ''šibkejša'' kot ▫$k$▫-metrična dimenzija in jo lahko predstavimo kot ILP problem. Največji ▫$k$▫, za katerega obstaja šibka ▫$k$▫-metrična dimenzija grafa ▫$G$▫, označimo s ▫$\kappa (G)$▫. Najprej dokažemo več lastnosti šibke ▫$k$▫-metrične dimenzije, ki so odvisne od obstoja pravih oziroma lažnih dvojčkov v grafu ▫$G$▫. S temi lastnostmi določimo ▫$\kappa (G)$▫ za več klasičnih družin grafov, kot so poti, zvezde, cikli in polni (dvodelni) grafi. Določimo tudi ▫$\kappa (G)$▫ za drevesa in mreže, kjer uporabimo lastnost, da se razdalja poveča s povečanjem kardinalnosti ▫$S$▫. Za vse naštete grafe določimo tudi natančne vrednosti šibke ▫$k$▫-metrične dimenzije za vsak ▫$k\leq\kappa (G)$▫.Source: Computational & Applied Mathematics. - ISSN 2238-3603 (Vol. 43, iss. 5, [article no.] 275, July 2024, 22 str.)Type of material - article, component part ; adult, seriousPublish date - 2024Language - englishCOBISS.SI-ID - 199098883
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source: Computational & Applied Mathematics. - ISSN 2238-3603 (Vol. 43, iss. 5, [article no.] 275, July 2024, 22 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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Peterin, Iztok | 20839 |
Sedlar, Jelena | 55478 |
Škrekovski, Riste | 15518 |
Yero, Ismael G. | ![]() |
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