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Primitive Inductive Theorems Bridge Implicit Induction Methods and Inductive Theorems in Higher-Order Rewriting Keiichirou KUSAKARI Masahiko SAKAI Toshiki SAKABE Publication IEICE TRANSACTIONS on Information and Systems Vol.E88-D No.12 pp.2715-2726 Publication Date: 2005/12/01 Online ISSN: DOI: 10.1093/ietisy/e88-d.12.2715 Print ISSN: 0916-8532 Type of Manuscript: PAPER Category: Computation and Computational Models Keyword: algebraic specification, simply-typed term rewriting system, primitive inductive theorem, inductive theorem, implicit induction method, Full Text: PDF(261.8KB)>>
Summary: Automated reasoning of inductive theorems is considered important in program verification. To verify inductive theorems automatically, several implicit induction methods like the inductionless induction and the rewriting induction methods have been proposed. In studying inductive theorems on higher-order rewritings, we found that the class of the theorems shown by known implicit induction methods does not coincide with that of inductive theorems, and the gap between them is a barrier in developing mechanized methods for disproving inductive theorems. This paper fills this gap by introducing the notion of primitive inductive theorems, and clarifying the relation between inductive theorems and primitive inductive theorems. Based on this relation, we achieve mechanized methods for proving and disproving inductive theorems. | ||||||||||
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