Abstract
A term is weakly shallow if each defined function symbol occurs either at the root or in the ground subterms, and a term rewriting system is weakly shallow if both sides of a rewrite rule are weakly shallow. This paper proves that non-E-overlapping, weakly-shallow, and non-collapsing term rewriting systems are confluent by extending reduction graph techniques in our previous work [19] with towers of expansions.
The results without proofs are orally presented at IWC 2014 [20].
M. Ogawa—This work is supported by JSPS KAKENHI Grant Number 25540003.
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Sakai, M., Oyamaguchi, M., Ogawa, M. (2015). Non-E-Overlapping, Weakly Shallow, and Non-Collapsing TRSs are Confluent. In: Felty, A., Middeldorp, A. (eds) Automated Deduction - CADE-25. CADE 2015. Lecture Notes in Computer Science(), vol 9195. Springer, Cham. https://doi.org/10.1007/978-3-319-21401-6_7
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