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» Automating Coherent Logic
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LICS
2006
IEEE
16 years 1 months ago
Fixed-Parameter Hierarchies inside PSPACE
Treewidth measures the ”tree-likeness” of structures. Many NP-complete problems, e.g., propositional satisfiability, are tractable on bounded-treewidth structures. In this wo...
Guoqiang Pan, Moshe Y. Vardi
SAC
2006
ACM
16 years 1 months ago
Provably faithful evaluation of polynomials
We provide sufficient conditions that formally guarantee that the floating-point computation of a polynomial evaluation is faithful. To this end, we develop a formalization of ...
Sylvie Boldo, César Muñoz
LICS
2005
IEEE
16 years 20 days ago
Certifying Compilation for a Language with Stack Allocation
This paper describes an assembly-language type system capable of ensuring memory safety in the presence of both heap and stack allocation. The type system uses linear logic and a ...
Limin Jia, Frances Spalding, David Walker, Neal Gl...
TIME
2005
IEEE
16 years 19 days ago
A Trace Semantics for Positive Core XPath
— We provide a novel trace semantics for positive core XPath that exposes all intermediate nodes visited by the query engine. This enables a detailed analysis of all information ...
Pieter H. Hartel
173
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TPHOL
2005
IEEE
16 years 19 days ago
A Design Structure for Higher Order Quotients
The quotient operation is a standard feature of set theory, where a set is partitioned into subsets by an equivalence relation. We reinterpret this idea for higher order logic, whe...
Peter V. Homeier