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» On Proofs in System P
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MFCS
2007
Springer
16 years 17 days ago
Combinatorial Proof that Subprojective Constraint Satisfaction Problems are NP-Complete
Abstract. We introduce a new general polynomial-time constructionthe fibre construction- which reduces any constraint satisfaction problem CSP(H) to the constraint satisfaction pr...
Jaroslav Nesetril, Mark H. Siggers
CADE
2007
Springer
16 years 6 months ago
System for Automated Deduction (SAD): A Tool for Proof Verification
In this paper, a proof assistant, called SAD, is presented. SAD deals with mathematical texts that are formalized in the ForTheL language (brief description of which is also given)...
Konstantin Verchinine, Alexander V. Lyaletski, And...
COCO
2004
Springer
79views Algorithms» more  COCO 2004»
15 years 12 months ago
Relativized NP Search Problems and Propositional Proof Systems
An NP search problem is the problems of finding a witness to the given NP predicate, and TFNP is the class of total NP search problems. TFNP contains a number of subclasses conta...
Josh Buresh-Oppenheim, Tsuyoshi Morioka
CADE
1990
Springer
15 years 10 months ago
IMPS: An Interactive Mathematical Proof System
imps is an Interactive Mathematical Proof System intended as a general purpose tool for formulating and applying mathematics in a familiar fashion. The logic of imps is based on a...
William M. Farmer, Joshua D. Guttman, F. Javier Th...
POPL
2006
ACM
16 years 6 months ago
Decidability and proof systems for language-based noninterference relations
Noninterference is the basic semantical condition used to account for confidentiality and integrity-related properties in programming languages. There appears to be an at least im...
Mads Dam