Algebraic and Logic Programming: 6th International Joint Conference, ALP '97 - HOA '97, Southhampton, UK, September 3-5, 1997. Proceedings

Safe folding/unfolding with conditional narrowing.- Optimal non-deterministic functional logic computations.- A semantic basis for termination analysis of logic programs and its realization using symbolic norm constraints.- Parallelizing functional programs by generalization.- Higher-order equational unification via explicit substitutions.- Parameterised higher-order algebraic specifications.- Higher-order lazy narrowing A computation model for a higher-order functional logic language.- On composable properties of term rewriting systems.- Needed reductions with context-sensitive rewriting.- Conditional term graph rewriting.- Lazy narrowing with parametric order sorted types.- Termination of algebraic type The syntactic approach.- Proof net semantics of proof search computation.- Explicit substitutions for the ??-calculus.- A left-linear variant of ??.- Perpetuality and uniform normalization.- Model generation with existentially quantified variables and constraints.- Optimal left-to-right pattern-matching automata.