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THE DOMINATION GAME ON SPLIT GRAPHS

Published online by Cambridge University Press:  12 November 2018

TIJO JAMES
Affiliation:
Department of Mathematics, Pavanatma College, Murickassery, India Department of Mathematics, Cochin University of Science and Technology, India email [email protected]
SANDI KLAVŽAR*
Affiliation:
Faculty of Mathematics and Physics, University of Ljubljana, Slovenia Faculty of Natural Sciences and Mathematics, University of Maribor, Slovenia Institute of Mathematics, Physics and Mechanics, Ljubljana, Slovenia email [email protected]
AMBAT VIJAYAKUMAR
Affiliation:
Department of Mathematics, Cochin University of Science and Technology, India email [email protected]
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Abstract

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We investigate the domination game and the game domination number $\unicode[STIX]{x1D6FE}_{g}$ in the class of split graphs. We prove that $\unicode[STIX]{x1D6FE}_{g}(G)\leq n/2$ for any isolate-free $n$-vertex split graph $G$, thus strengthening the conjectured $3n/5$ general bound and supporting Rall’s $\lceil n/2\rceil$-conjecture. We also characterise split graphs of even order with $\unicode[STIX]{x1D6FE}_{g}(G)=n/2$.

Type
Research Article
Copyright
© 2018 Australian Mathematical Publishing Association Inc. 

Footnotes

The second author acknowledges the financial support from the Slovenian Research Agency (research core funding No. P1-0297 and the project N1-0043 Combinatorial Problems with an Emphasis on Games).

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