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Title:Povezanost v produktih grafov
Authors:ID Cigula, Sandra (Author)
ID Špacapan, Simon (Mentor) More about this mentor... New window
Files:.pdf MAG_Cigula_Sandra_2016.pdf (3,58 MB)
MD5: 9C3D2387F536433C38DD1054C008D232
 
Language:Slovenian
Work type:Master's thesis
Typology:2.09 - Master's Thesis
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:V tej nalogi bomo obravnavali pojma povezanost po povezavah in povezanost po vozliščih v produktih grafov. Drugi cilj bo opisati strukturo in ostale lastnosti najmanjših presečnih množic vozlišč in najmanjših presečnih množic povezav v produktih grafov. Osredotočili se bomo predvsem na kartezični, direktni, krepki in leksikografski produkt grafov. Zanimalo nas bo, kako izraziti povezanost produkta z lastnostmi posameznih faktorjev produkta, kot so najmanjša stopnja, red grafa in povezanost. Pri direktnem produktu grafov bomo ugotovili, da je povezanost po povezavah odvisna od povezanosti faktorjev, pa tudi od tega, kako daleč sta faktorja G in H od tega, da bi bila dvodelna. Nato bomo obravnavali velikost in strukturo najmanjših presečnih množic povezav kartezičnih produktov grafov. Podan bo dokaz trditve lambda(G,Box,H)=textrmminleftlambda(G)left|V(H)right|,lambda(H)left|V(G)right|,delta(G)+delta(H)right. Dokaz podobne trditve za povezanost po vozliščih kartezičnega produkta bo naveden v nadaljevanju. Na koncu bomo obravnavali velikost in strukturo najmanjših presečnih množic povezav krepkih produktov grafov in povezanost v leksikografskem produktu.
Keywords:produkti grafov, kartezični produkt, direktni produkt, krepki produkt, leksikografski produkt, povezanost.
Place of publishing:Borovci
Publisher:[S. Cigula]
Year of publishing:2016
PID:20.500.12556/DKUM-58628 New window
UDC:519.171(043.2)
COBISS.SI-ID:22455560 New window
NUK URN:URN:SI:UM:DK:8VEMNVBX
Publication date in DKUM:23.08.2016
Views:1681
Downloads:202
Metadata:XML DC-XML DC-RDF
Categories:FNM
:
CIGULA, Sandra, 2016, Povezanost v produktih grafov [online]. Master’s thesis. Borovci : S. Cigula. [Accessed 19 March 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=58628
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Secondary language

Language:English
Title:Connectivity of graph products
Abstract:In this thesis we discuss edge and vertex connectivities of graph products. The aim is to determine the connectivity of all four standard graph products and describe the structure of minimum edge-cut sets. We will study how to express the connectivity of the product with properties of its factors, such as minimum degree, order and connectivity. For the edge connectivity of direct product of graphs we find that connectivity of the product depends not only on connectivities of its factors but also on how far the factors G and H are from being bipartite. Then we discuss the structure and other properties of minimum edge-cuts in Cartesian product of graphs. We present the proof of the following result lambda(G,Box,H)=textrmminleftlambda(G)left|V(H)right|,lambda(H)left|V(G)right|,delta(G)+delta(H)right. Proof of a similar claim for vertex connectivity of Cartesian products of graphs will also be presented. Finally we consider the size and the structure of minimum edge-cuts in strong products of graphs and edge and vertex connectivities of lexicographic product.
Keywords:graphs products, Cartesian product, direct product, strong product, lexicographic product, connectivity.


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