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Infinite Families of Circular and Möbius Ladders that are Total Domination Game Critical

Infinite Families of Circular and Möbius Ladders that are Total Domination Game Critical Let $$\gamma _\mathrm{tg}(G)$$ γ tg ( G ) denote the game total domination number of a graph G, and let G|v mean that a vertex v of G is declared to be already totally dominated. A graph G is total domination game critical if $$\gamma _\mathrm{tg}(G|v) < \gamma _\mathrm{tg}(G)$$ γ tg ( G | v ) < γ tg ( G ) holds for every vertex v in G. If $$\gamma _\mathrm{tg}(G) = k$$ γ tg ( G ) = k , then G is further called k- $$\gamma _\mathrm{tg}$$ γ tg -critical. In this paper, we prove that the circular ladder $$C_{4k} \,\square \,K_2$$ C 4 k □ K 2 is 4k- $$\gamma _{\mathrm{tg}}$$ γ tg -critical and that the Möbius ladder $$\mathrm{ML}_{2k}$$ ML 2 k is 2k- $$\gamma _{\mathrm{tg}}$$ γ tg -critical. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of the Malaysian Mathematical Sciences Society Springer Journals

Infinite Families of Circular and Möbius Ladders that are Total Domination Game Critical

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References (27)

Publisher
Springer Journals
Copyright
Copyright © 2018 by Malaysian Mathematical Sciences Society and Penerbit Universiti Sains Malaysia
Subject
Mathematics; Mathematics, general; Applications of Mathematics
ISSN
0126-6705
eISSN
2180-4206
DOI
10.1007/s40840-018-0635-8
Publisher site
See Article on Publisher Site

Abstract

Let $$\gamma _\mathrm{tg}(G)$$ γ tg ( G ) denote the game total domination number of a graph G, and let G|v mean that a vertex v of G is declared to be already totally dominated. A graph G is total domination game critical if $$\gamma _\mathrm{tg}(G|v) < \gamma _\mathrm{tg}(G)$$ γ tg ( G | v ) < γ tg ( G ) holds for every vertex v in G. If $$\gamma _\mathrm{tg}(G) = k$$ γ tg ( G ) = k , then G is further called k- $$\gamma _\mathrm{tg}$$ γ tg -critical. In this paper, we prove that the circular ladder $$C_{4k} \,\square \,K_2$$ C 4 k □ K 2 is 4k- $$\gamma _{\mathrm{tg}}$$ γ tg -critical and that the Möbius ladder $$\mathrm{ML}_{2k}$$ ML 2 k is 2k- $$\gamma _{\mathrm{tg}}$$ γ tg -critical.

Journal

Bulletin of the Malaysian Mathematical Sciences SocietySpringer Journals

Published: May 18, 2018

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