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Algebraic and Logic Programming: 6th International Joint - download pdf or read online

By M. Alpuente, M. Falaschi, G. Moreno, G. Vidal (auth.), Michael Hanus, Jan Heering, Karl Meinke (eds.)

ISBN-10: 3540634592

ISBN-13: 9783540634591

This ebook constitutes the refereed court cases of the sixth foreign convention on Algebraic and good judgment Programming, ALP '97 and the third foreign Workshop on Higher-Order Algebra, common sense and time period Rewriting, HOA '97, held together in Southampton, united kingdom, in September 1997.
The 18 revised complete papers offered within the booklet have been chosen from 31 submissions. the amount is split in sections on practical and good judgment programming, higher-order equipment, time period rewriting, varieties, lambda-calculus, and theorem proving methods.

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Read Online or Download Algebraic and Logic Programming: 6th International Joint Conference ALP '97 — HOA '97 Southampton, UK, September 3–5, 1997 Proceedings PDF

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Additional resources for Algebraic and Logic Programming: 6th International Joint Conference ALP '97 — HOA '97 Southampton, UK, September 3–5, 1997 Proceedings

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A syntactic object sl is less instantiated than a syntactic object s2 denoted sl < s~ if there exists a substitution 0 such that s~ = sl/9. A clause is an object of the form head ~ body where head is an atom and body is a goal. If body consists of at most one atom then the clause is said to be binary. The set of binary clauses is denoted ~. J {true}. An identity clause is a binary 33 clause of the form p(~) ~- p(~) where ~ denotes a tuple of distinct variables. Identity clauses play a technical role in the definition of the fixed point semantics presented below.

I also owe to the ideas and explanations of P. L6pez Fraguas, M. RodrfguezoArtalejo, and others on the Curry mailing 1/st. Note The full version of this paper, which includes all the proofs, is available at UBL ~. cs. pdx. edu/'ant oy/publications, html. References I. S. Antoy. Definitional trees. In Prec. of the ~tA Intl. Conf. on Algebraic and Logic Programming, pages 143-157. Springer LNCS 632, 1992. 2. S. Echahed, and M. Harms. A needed narrowing strategy. In Proc. 8 of Programming Languages, pages 268-279, Portland, 1994.

If I -~ r is a rule applied to narrow a descendant of 77(t), then 7r < I. L e m m a 23. Let t be a term such that s = (p,R,r/) E INS(t), and a an idempotent substitution whose domain is contained in the set of the variables of t. zists a substitution a' such that (p, R, a') E INS(a(t)). L e m m a 24. Let t be a term, t . ,~ e2 t2 a narrowing step compatible frith sx computed by I N S on t, and sz = s2\$1. generate, then s3 E INS(tx). D e f i n i t i o n 25. tin any narrowing derivation t ~+n u, where u is constructorrooted and r / > a, a descendant of tip is narrowed.

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Algebraic and Logic Programming: 6th International Joint Conference ALP '97 — HOA '97 Southampton, UK, September 3–5, 1997 Proceedings by M. Alpuente, M. Falaschi, G. Moreno, G. Vidal (auth.), Michael Hanus, Jan Heering, Karl Meinke (eds.)


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