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Title:Domination game critical graphs
Authors:ID Bujtás, Csilla (Author)
ID Klavžar, Sandi (Author)
ID Košmrlj, Gašper (Author)
Files:.pdf Discussiones_Mathematicae_Graph_Theory_2015_Bujtas,_Klavzar,_Kosmrlj_Domination_game_critical_graphs.pdf (194,74 KB)
MD5: F52741DC9E1C4954DB3E246A85FD7EC7
 
URL http://www.discuss.wmie.uz.zgora.pl/gt/index.php?doi=10.7151/dmgt.1839
 
Language:English
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:The domination game is played on a graph ▫$G$▫ by two players who alternately take turns by choosing a vertex such that in each turn at least one previously undominated vertex is dominated. The game is over when each vertex becomes dominated. One of the players, namely Dominator, wants to finish the game as soon as possible, while the other one wants to delay the end. The number of turns when Dominator starts the game on ▫$G$▫ and both players play optimally is the graph invariant ▫$\gamma_g(G)$▫, named the game domination number. Here we study the ▫$\gamma_g$▫-critical graphs which are critical with respect to vertex predomination. Besides proving some general properties, we characterize ▫$\gamma_g$▫-critical graphs with ▫$\gamma_g =2$▫ and with ▫$\gamma_g =3$▫, moreover for each ▫$n$▫ we identify the (infinite) class of all ▫$\gamma_g$▫-critical ones among the ▫$n$▫th powers ▫$C_N^n$▫ of cycles. Along the way we determine ▫$\gamma_g(C_N^n)$▫ for all ▫$n$▫ and ▫$N$▫. Results of a computer search for ▫$\gamma_g$▫-critical trees are presented and several problems and research directions are also listed.
Keywords:domination game, domination game critical graphs, powers of cycles, trees
Publication status:Published
Publication version:Version of Record
Submitted for review:31.08.2024
Article acceptance date:20.02.2025
Publication date:28.02.2025
Number of pages:str. 781-796
Numbering:Letn. 35, št. 4
PID:20.500.12556/DKUM-65335 New window
ISSN:1234-3099
UDC:519.17
ISSN on article:1234-3099
COBISS.SI-ID:17464921 New window
NUK URN:URN:SI:UM:DK:D0MNDQWR
Publication date in DKUM:31.03.2017
Views:1400
Downloads:438
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Discussiones mathematicae. Graph theory
Shortened title:Discuss. Math., Graph Theory
Publisher:Technical University Press
ISSN:1234-3099
COBISS.SI-ID:7487065 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:P1-0297
Name:Teorija grafov

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:31.03.2017

Secondary language

Language:Slovenian
Title:Kritični grafi za dominacijsko igro
Abstract:Dominacijsko igro na grafu ▫$G$▫ igrata dva igralca, ki izmenično izbirata vozlišča grafa tako, da je po vsaki potezi dominirano vsaj eno novo vozlišče. Igra se zaključi, ko so vsa vozlišča dominirana. Eden od igralcev - Dominator - želi igro končati čim hitreje, medtem ko Zavlačevalka želi igro končati čim kasneje. Število potez v igri, ki jo začne Dominator, in ko oba igralca igrata optimalno, imenujemo igralno dominacijsko število in označimo z ▫$\gamma_g(G)$▫. V članku raziskujemo ▫$\gamma_g$▫-kritične grafe, ki so vpeljani kot grafi kritični glede na predhodno dominacijo vozlišča. Poleg nekaj splošnih rezultatov karakteriziramo ▫$\gamma_g$▫-kritične grafe z ▫$\gamma_g =2$▫ in z ▫$\gamma_g =3$▫. Za vsak $n$ tudi identificiramo neskončen razred grafov vseh ▫$\gamma_g$▫-kritičnih grafov izmed ▫$n$▫tih potenc ▫$C_N^n$▫ ciklov. Pri tem določimo ▫$\gamma_g(C_N^n)$▫ za vse ▫$n$▫ in ▫$N$▫. Predstavljeni so rezultati računalniškega pregledovanja ▫$\gamma_g$▫-kritičnih dreves. Navedenih je tudi več problemov in možnih nadaljnjih raziskovalnih smeri.
Keywords:dominacijska igra, kritični grafi za dominacijsko igro, potence ciklov, drevesa


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