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Undecidable questions related to Church-Rosser Thue systems

✍ Scribed by Colm Ó'Dúnlaing


Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
792 KB
Volume
23
Category
Article
ISSN
0304-3975

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Homogeneous Thue systems and the Church-
✍ Ronald V Book 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 455 KB

Homogeneous Thue systems are considered. It is shown that if a homogeneous Thue system is not Church-Rosser, then there is no Chttrch-Rosser system that is equivalent to it. This result contrasts with the theorems of 0'Dfnlaing [10,11] showing that it is undecidable whether the congruence generated