English

Maker-Breaker games on random geometric graphs

Combinatorics 2013-09-24 v1 Probability

Abstract

In a Maker-Breaker game on a graph GG, Breaker and Maker alternately claim edges of GG. Maker wins if, after all edges have been claimed, the graph induced by his edges has some desired property. We consider four Maker-Breaker games played on random geometric graphs. For each of our four games we show that if we add edges between nn points chosen uniformly at random in the unit square by order of increasing edge-length then, with probability tending to one as nn\to\infty, the graph becomes Maker-win the very moment it satisfies a simple necessary condition. In particular, with high probability, Maker wins the connectivity game as soon as the minimum degree is at least two; Maker wins the Hamilton cycle game as soon as the minimum degree is at least four; Maker wins the perfect matching game as soon as the minimum degree is at least two and every edge has at least three neighbouring vertices; and Maker wins the HH-game as soon as there is a subgraph from a finite list of "minimal graphs". These results also allow us to give precise expressions for the limiting probability that G(n,r)G(n,r) is Maker-win in each case, where G(n,r)G(n,r) is the graph on nn points chosen uniformly at random on the unit square with an edge between two points if and only if their distance is at most rr.

Keywords

Cite

@article{arxiv.1309.5759,
  title  = {Maker-Breaker games on random geometric graphs},
  author = {Andrew Beveridge and Andrzej Dudek and Alan Frieze and Tobias Muller and Milos Stojakovic},
  journal= {arXiv preprint arXiv:1309.5759},
  year   = {2013}
}

Comments

46 pages, 9 figures

R2 v1 2026-06-22T01:32:07.145Z