Title
Decidability and undecidability results for propositional schemata
Abstract
We define a logic of propositional formula schemata adding to the syntax of propositional logic indexed propositions (e.g., pi) and iterated connectives ∨ or ∧ ranging over intervals parameterized by arithmetic variables (e.g., ∧i-1n pi, where n is a parameter). The satisfiability problem is shown to be undecidable for this new logic, but we introduce a very general class of schemata, called bound-linear, for which this problem becomes decidable. This result is obtained by reduction to a particular class of schemata called regular, for which we provide a sound and complete terminating proof procedure. This schemata calculus (called STAB) allows one to capture proof patterns corresponding to a large class of problems specified in propositional logic. We also show that the satisfiability problem becomes again undecidable for slight extensions of this class, thus demonstrating that bound-linear schemata represent a good compromise between expressivity and decidability
Year
DOI
Venue
2014
10.1613/jair.3351
Journal of Artificial Intelligence Research
Keywords
DocType
Volume
proof pattern,i-1n pi,satisfiability problem,particular class,large class,new logic,schemata calculus,undecidability result,propositional logic,propositional schema,general class,propositional formula schema
Journal
abs/1401.3900
Issue
ISSN
Citations 
1
Journal Of Artificial Intelligence Research, Volume 40, pages 599-656, 2011
15
PageRank 
References 
Authors
0.90
22
3
Name
Order
Citations
PageRank
Vincent Aravantinos18610.29
Ricardo Caferra230329.85
Nicolas Peltier35011.84