English

Maker-Breaker resolving game played on lexicographic products of graphs

Combinatorics 2025-12-02 v1

Abstract

In the Maker-Breaker resolving game, two players named Resolver and Spoiler alternately select unplayed vertices of a given graph GG. The aim of Resolver is to select all the vertices of some resolving set of GG, while Spoiler aims to select at least one vertex from every resolving set of GG. In this paper, this game is investigated on the lexicographic product of graphs. It is proved that if Spoiler has a winning strategy on a graph HH no matter who starts the game, or if the first player has a winning strategy on HH, then Spoiler always has a winning strategy on GHG\circ H. Special attention is paid to lexicographic products in which the second factor is either complete, or a path, or a cycle. For instance, in GP2G\circ P_{2\ell} and in GC2G\circ C_{2\ell}, Resolver always wins, while in GP2+1G\circ P_{2\ell+1} and in GC2+1G\circ C_{2\ell+1} the same conclusion holds provided GG is free from false twins. On the other hand, Spoiler always wins on GP5G\circ P_5. In most of the cases, the corresponding Maker-Breaker resolving number is also determined.

Keywords

Cite

@article{arxiv.2512.00813,
  title  = {Maker-Breaker resolving game played on lexicographic products of graphs},
  author = {Savitha K S and Sandi Klavžar and Tijo James},
  journal= {arXiv preprint arXiv:2512.00813},
  year   = {2025}
}