English

Did the Train Reach its Destination: The Complexity of Finding a Witness

Computational Complexity 2017-01-09 v2 Computer Science and Game Theory

Abstract

Recently, Dohrau et al. studied a zero-player game on switch graphs and proved that deciding the termination of the game is in NP \cap coNP. In this short paper, we show that the search version of this game on switch graphs, i.e., the task of finding a witness of termination (or of non-termination) is in PLS.

Keywords

Cite

@article{arxiv.1609.03840,
  title  = {Did the Train Reach its Destination: The Complexity of Finding a Witness},
  author = {Karthik C. S.},
  journal= {arXiv preprint arXiv:1609.03840},
  year   = {2017}
}