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Erschienen in:
1999 | OriginalPaper | Buchkapitel
Argument Filtering Transformation
verfasst von : Keiichirou Kusakari, Masaki Nakamura, Yoshihito Toyama
Erschienen in: Principles and Practice of Declarative Programming
Verlag: Springer Berlin Heidelberg
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To simplify the task of proving termination of term rewriting systems, several elimination methods, such as the dummy elimination, the distribution elimination, the general dummy elimination and the improved general dummy elimination, have been proposed. In this paper, we show that the argument filtering method combining with the dependency pair technique is essential in all the above elimination methods. We present remarkable simple proofs for the soundness of these elimination methods based on this observation. Moreover, we propose a new elimination method, called the argument filtering transformation, which is not only more powerful than all the other elimination methods but also especially useful to make clear the essential relation hidden behind these methods.