Beschreibung

The papers in this volume are extended versions of presentations at the fourth International Workshop on Extensions of Logic Programming, held at the University of St Andrews, March/April 1993. Among the topics covered in the volume are: defintional reflection and completion, modules in lambda-Prolog, representation of logics as partial inductive definitions, non-procedural logic programming, knowledge representation, contradiction avoidance, disjunctive databases, strong negation, linear logic programming, proof theory and regular search spaces, finite sets and constraint logic programming, search-space pruning and universal algebra, and implementation on transputer networks.

Inhalt
Design for AKL with intelligent pruning.- Contradiction: When avoidance equals removal Part I.- Birkhoff's HSP-theorem for cumulative logic programs.- Finite domains and exclusions as first-class citizens.- Some experimental results in implementing a logic language with multi-head clauses on a Transputer architecture.- A language with finite sets embedded in the CLP-scheme.- Finitary partial inductive definitions as a general logic.- Programming methodologies in GCLA.- Computing cost estimates for proof strategies.- Logic programming with multiple context management schemes.- Non-procedural logic programming.- Axioms in definitional calculi.- A proposal for modules in ?Prolog.- Regular search spaces as a foundation of logic programming.- Answer sets and nonmonotonic S4.- Contradiction: When avoidance equals removal Part II.- Cut formulae and logic programming.- Higher-order aspects of logic programming.- Representation and inference with consistent temporal propositions.- Definitional reflection and the completion.- Linear logic semantics for Concurrent Prolog.

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