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An exponential lower bound for a constraint propagation proof system based on ordered binary decision diagrams

Published online by Cambridge University Press:  12 March 2014

Jan Krajíček*
Affiliation:
Mathematical Institute, Academy of Sciences of the Czech Republic, Žitná 25, Prague, 115 67, The, Czech Republic, E-mail: [email protected]

Abstract

We prove an exponential lower bound on the size of proofs in the proof system operating with ordered binary decision diagrams introduced by Atserias, Kolaitis and Vardi [2]. In fact, the lower bound applies to semantic derivations operating with sets defined by OBDDs. We do not assume any particular format of proofs or ordering of variables, the hard formulas are in CNF. We utilize (somewhat indirectly) feasible interpolation.

We define a proof system combining resolution and the OBDD proof system.

Type
Research Article
Copyright
Copyright © Association for Symbolic Logic 2008

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