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LICS
2008
IEEE
16 years 16 days ago
On the Computational Complexity of Cut-Reduction
Using appropriate notation systems for proofs, cutreduction can often be rendered feasible on these notations. Explicit bounds can be given. Developing a suitable notation system ...
Klaus Aehlig, Arnold Beckmann
LICS
2008
IEEE
16 years 16 days ago
Piecewise Testable Tree Languages
— This paper presents a decidable characterization of tree languages that can be defined by a boolean combination of Σ1 formulas. This is a tree extension of the Simon theorem,...
Mikolaj Bojanczyk, Luc Segoufin, Howard Straubing
LICS
2008
IEEE
16 years 16 days ago
The Ordinal Recursive Complexity of Lossy Channel Systems
We show that reachability and termination for lossy channel systems is exactly at level Fωω in the Fast-Growing Hierarchy of recursive functions, the first level that dominates...
Pierre Chambart, Ph. Schnoebelen
TPHOL
2008
IEEE
16 years 16 days ago
A Compiled Implementation of Normalization by Evaluation
We present a novel compiled approach to Normalization by Evaluation (NBE) for ML-like languages. It supports efficient normalization of open λ-terms w.r.t. β-reduction and rewrit...
Klaus Aehlig, Florian Haftmann, Tobias Nipkow
TPHOL
2008
IEEE
16 years 16 days ago
A Brief Overview of HOL4
The HOL4 proof assistant supports specification and proof in classical higher order logic. It is the latest in a long line of similar systems. In this short overview, we give an o...
Konrad Slind, Michael Norrish