no code implementations • 17 Nov 2017 • David E. Narváez
Nevertheless, little has been said about its use in the context of AllSAT problems: problems where we are interested in listing all the models of a Boolean formula.
no code implementations • 14 Jun 2017 • Lane A. Hemaspaandra, David E. Narváez
For example, in this paper we show that, under the assumption that P $\neq$ NP, there are easily recognizable families of Boolean formulas with strong backdoors that are easy to find, yet for which it is hard (in fact, NP-complete) to determine whether the formulas are satisfiable.
no code implementations • 11 Jun 2016 • Lane A. Hemaspaandra, David E. Narváez
We show that, under the widely believed assumption that integer factoring is hard, there exist sets of boolean formulas that have obvious, nontrivial backbones yet finding the values, $a_S$, of those backbones is intractable.