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Title:Graphs with unique Grundy dominating sets
Authors:ID Brešar, Boštjan (Author)
ID Dravec, Tanja (Author)
Files:.pdf RAZ_Bresar_Bostjan_2026.pdf (490,35 KB)
MD5: 0865E744257F6584529DEB6156BB420A
 
URL https://link.springer.com/article/10.1007/s40314-026-03835-w
 
Language:English
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:Given a graph ▫$G$▫ consider a procedure of building a dominating set ▫$D$▫ in ▫$G$▫ by adding vertices to ▫$D$▫ one at a time in such a way that whenever vertex ▫$x$▫ is added to ▫$D$▫ there exists a vertex ▫$y\in N_G[x]$▫ that becomes dominated only after ▫$x$▫ is added to ▫$D$▫. The maximum cardinality of a set ▫$D$▫ obtained in the described way is called the Grundy domination number of ▫$G$▫ and ▫$D$▫ a Grundy dominating set. While a Grundy dominating set of a connected graph ▫$G$▫ is not unique unless ▫$G$▫ is the trivial graph, we consider a natural weaker uniqueness condition, notably that for every two Grundy dominating sets in a graph ▫$G$▫ there is an automorphism that maps one to the other. We investigate both versions of uniqueness for several concepts of Grundy domination, which appeared in the context of domination games and are also closely related to zero forcing. For each of the four variations of Grundy domination we characterize the graphs that have only one Grundy dominating set of the given type, and characterize those forests that enjoy the weaker (isomorphism based) condition of uniqueness. The latter characterizations lead to efficient algorithms for recognizing the corresponding classes of forests.
Keywords:Grundy total domination number, Grundy domination number, zero forcing number, trees, graph automorphism
Publication status:Published
Publication version:Version of Record
Article acceptance date:31.05.2026
Publication date:20.06.2026
Place of publishing:São Carlos
Publisher:Sociedade Brasileira de Matemática Aplicada e Computacional
Year of publishing:2026
Number of pages:20 str.
Numbering:Letn. 45, št. 10, št. članka 444
PID:20.500.12556/DKUM-98609 New window
UDC:519.17
ISSN on article:2238-3603
COBISS.SI-ID:282411011 New window
DOI:10.1007/s40314-026-03835-w New window
Publication date in DKUM:31.08.2026
Views:163
Downloads:0
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Computational & Applied Mathematics
Shortened title:Comput. Appl. Math.
Publisher:Sociedade Brasileira de Matemática Aplicada e Computacional.
ISSN:2238-3603
COBISS.SI-ID:73925379 New window

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P1-0297
Name:Teorija grafov

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:BI-BA-26-27-028
Name:Optimizacija sodobnih proizvodnih procesov na podlagi inovativnih rešitev ter različnih digitalnih simulacijskih tehnologij in algoritmov

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:J1-4008
Name:Drevesno neodvisnostno število grafov

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:20.06.2026

Secondary language

Language:Slovenian
Title:Grafi z enoličnimi Grundyjevimi dominacijskimi množicami
Abstract:Za graf ▫$G$▫ obravnavamo postopek izgradnje dominacijske množice ▫$D$▫, kjer zaporedoma dodajamo po eno vozlišče tako, da vsakič, ko je novo vozlišče ▫$x$▫ dodano v množico ▫$D$▫, obstaja vozlišče ▫$y \in N_G[x]$▫, ki postane dominirano šele potem, ko smo ▫$x$▫ dodali v ▫$D$▫. Največja kardinalnost množice ▫$D$▫, dobljene na opisani način, se imenuje Grundyjevo dominacijsko število grafa ▫$G$▫, množici ▫$D$▫ pa rečemo Grundyjeva dominacijska množica grafa ▫$G$▫. Grundyjeva dominacijska množica povezanega grafa ni nikoli enolična, razen pri trivialnem grafu, zato obravnavamo naravno šibkejšo različico enoličnosti, pri kateri ne ločimo med dvema Grundyjevima dominacijskima množicama grafa ▫$G$▫, če obstaja avtomorfizem grafa ▫$G$▫, ki preslika eno v drugo. Obe različici enoličnosti obravnavamo glede na več konceptov Grundyjeve dominacije, ki so se pojavili v kontekstu raziskav dominacijske igre in so tesno povezani tudi z ničelno prisilo. Za vsako od štirih inačic Grundyjeve dominacije okarakteriziramo grafe, ki imajo natanko eno Grundyjevo dominacijsko množico ustreznega tipa, ter tudi tiste gozdove, ki zadoščajo šibkejšemu (na avtomorfizmih temelječemu) pogoju enoličnosti. Slednje karakterizacije vodijo do učinkovitih algoritmov za prepoznavanje pripadajočih razredov gozdov.
Keywords:Grundyjevo celotno dominacijsko število, Grundyjevo dominacijsko število, število ničelne prisile, drevesa, avtomorfizem grafa


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