On the satisfiability of random regular signed SAT formulas
Discrete Mathematics
2011-12-08 v1 Combinatorics
Abstract
Regular signed SAT is a variant of the well-known satisfiability problem in which the variables can take values in a fixed set V \subset [0,1], and the `literals' have the form "x \le a" or "x \ge a". We answer some open question regarding random regular signed k-SAT formulas: the probability that a random formula is satisfiable increases with |V|; there is a constant upper bound on the ratio m/n of clauses m over variables n, beyond which a random formula is asypmtotically almost never satisfied; for k=2 and V=[0,1], there is a phase transition at m/n=2.
Cite
@article{arxiv.1112.1360,
title = {On the satisfiability of random regular signed SAT formulas},
author = {Christian Laus and Dirk Oliver Theis},
journal= {arXiv preprint arXiv:1112.1360},
year = {2011}
}
Comments
12 pages