Information and Computation - Semantics of Data Types
Proofs and types
Inductive Definitions in the system Coq - Rules and Properties
TLCA '93 Proceedings of the International Conference on Typed Lambda Calculi and Applications
STACS '02 Proceedings of the 19th Annual Symposium on Theoretical Aspects of Computer Science
A Model-Based Completeness Proof of Extended Narrowing and Resolution
IJCAR '01 Proceedings of the First International Joint Conference on Automated Reasoning
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We consider a class of logical formalisms, in which first-order logic is extended by identifying propositions modulo a given congruence. We particularly focus on the case where this congruence is induced by a confluent and terminating rewrite system over the propositions. We show that this extension enhances the power of first-order logic and that various formalisms, including Church's higher-order logic (HOL) can be described in our framework. We conjecture that proof normalization and logical consistency always hold over this class of formalisms, provided some minimal conditions over the rewrite system are fulfilled. We prove this conjecture for some subcases, including HOL.