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» Automating Coherent Logic
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LICS
2006
IEEE
16 years 16 days 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 14 days 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 3 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 3 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
TPHOL
2005
IEEE
16 years 3 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