Comparing combinatory reduction systems and higher-order rewrite systems:

Abstract: "In this paper two formats of higher-order rewriting are compared: Combinatory Reduction Systems introduced by Klop and Higher- order Rewrite Systems defined by Nipkow. Although it always has been obvious that both formats are closely related to each other, up to now the exact relatio...

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Bibliographic Details
Main Authors: Oostrom, Vincent van (Author), Raamsdonk, Femke van (Author)
Format: Book
Language:English
Published: Amsterdam 1993
Series:Centrum voor Wiskunde en Informatica <Amsterdam> / Department of Computer Science: Report CS 93,61
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Summary:Abstract: "In this paper two formats of higher-order rewriting are compared: Combinatory Reduction Systems introduced by Klop and Higher- order Rewrite Systems defined by Nipkow. Although it always has been obvious that both formats are closely related to each other, up to now the exact relationship between them has not been clear. This was an unsatisfying situation since it meant that proofs for much related frameworks were given twice. We present two translations, one from Combinatory Reduction Systems into Higher-Order Rewrite Systems and one vice versa, based on a detailed comparison of both formats
Since the translations are very 'neat' in the sense that the rewrite relation is preserved and (almost) reflected, we can conclude that as far as rewrite theory is concerned, Combinatory Reduction Systems and Higher-Order Rewrite Systems are equivalent, the only difference being that Combinatory Reduction Systems employ a more 'lazy' evaluation strategy. Moreover, due to this result it is the case that some syntactic properties derived for the one class also hold for the other.
Physical Description:30 S.

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