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Title:Lastnosti grafov Hanojskega stolpa
Authors:ID Zmazek, Eva (Author)
ID Klavžar, Sandi (Mentor) More about this mentor... New window
Files:.pdf MAG_Zmazek_Eva_2019.pdf (554,90 KB)
MD5: F41C06D194475BCD4D08ED876C4B1D47
PID: 20.500.12556/dkum/cc42130b-e693-415f-962c-388008f83675
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:Hanojski grafi $H_p^n$, $n \geq 1$, $p \geq 3$, so modeli predstavitve problema Hanojskega stolpa z $n$ diski in $p$ nosilci. Njihova rekurzivna konstrukcija vodi do izpeljave nekaterih lastnosti. Kromatično število $\chi(H_p^n)$ Hanojskega grafa $H_p^n$ je na primer enako številu nosilcev $p$ prirejenega problema Hanojskega stolpa, kromatični indeks $\chi'(H_p^n)$ tega Hanojskega grafa pa je enak njegovi maksimalni stopnji vozlišč $\Delta(H_p^n)$. Vsi Hanojski grafi so Hamiltonovi, $(p-1)$-povezani, nekateri med njimi so tudi ravninski. \end{sloppypar} \begin{sloppypar} Barvanje povezav $c: E(G) \to [k]$ je mavrica, če za poljubni različni povezavi $e,f \in E(G)$ velja $c(e) \not= c(f)$. Anti-Ramseyevo število na paru grafov $G$ in $H$ je najmanjše tako število $n$, za katerega pri vsakem barvanju $c$ povezav grafa $G$ z natanko $n$ barvami, obstaja $H$-podgraf grafa $G$, za katerega je zožitev $c|H$ mavrica. V magistrski nalogi si ogledamo anti-Ramseyeva števila $\ar(H_p^n,H_q^m)$, $p,q \geq 3$, $n,m \geq 1$, na paru Hanojskih grafov, kjer je $m=n=1$ in $q=3$, in na paru Hanojskih grafov, kjer je $p=q$. Za anti-Ramseyevo število $\ar(H_p^n,H_3^1)$, $p \geq 3$, $n \geq 1$, izpeljemo rekurzivno zvezo. Pokažemo tudi, da je anti-Ramseyevo število $\ar(H_4^2,H_3^2)$ omejeno navzdol s $30$ ter navzgor s $34$.
Keywords:Hanojski graf, Hanojski stolp, anti-Ramseyevo število, mavrica
Place of publishing:Maribor
Publisher:[E. Zmazek]
Year of publishing:2019
PID:20.500.12556/DKUM-74115 New window
UDC:519.17(043.2)
COBISS.SI-ID:24867592 New window
NUK URN:URN:SI:UM:DK:WB8OWLPT
Publication date in DKUM:05.11.2019
Views:1216
Downloads:149
Metadata:XML DC-XML DC-RDF
Categories:FNM
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:07.08.2019

Secondary language

Language:English
Title:Properties of the graphs of the Tower of Hanoi
Abstract:For integers $n \geq 1$ and $p \geq 3$ we define Hanoi graph $H_p^n$ as a graph model of Tower of Hanoi with $n$ discs and $p$ pegs. Because of their recursive construction, there are some nice properties of Hanoi graphs. For example, the chromatic number $\chi(H_p^n)$ of Hanoi graph $H_p^n$ is equal to the number of pegs $p$ and the chromatic index $\chi'(H_p^n)$ of the same Hanoi graph is equal to its maximum degree of a vertex, $\Delta(H_p^n)$. Each Hanoi graph $H_p^n$ is Hamiltonian and $(p-1)$-connected, and some of them are also planar. Edge coloring $c: E(G) \to [k]$ of graph $G$ is a rainbow if all of its edges are colored with different colors. Anti-Ramsey number for a pair of graphs $G$ and $H$ is the lowest number $n$ such that for every edge coloring $c$ of graph $G$ with exactly $n$ colors there exists such $H$-subgraph of graph $G$ that the coloring $c$ on it is a rainbow. In the thesis, we present the exact value of anti-Ramsey numbers $\ar(H_p^n,H_q^m)$, $p,q \geq 3$, $n,m \geq 1$, for pairs of Hanoi graph where $n=m=1$, $q=3$ and also for pairs of Hanoi graphs where $p=q$. For anti-Ramsey number $\ar(H_p^n,H_3^1)$, $p \geq 3$, $n \geq 1$ we give the recursive formula. We also show that the exact value of the anti-Ramsey number $\ar(H_4^2,H_3^2)$ is bounded with $30$ and $34$.
Keywords:Hanoi graph, Tower of Hanoi, anti-Ramsey number, rainbow


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