Confluence by Decreasing Diagrams – Formalized
Harald Zankl · DROPS (Schloss Dagstuhl – Leibniz Center for Informatics) · 2013
This paper presents a formalization of decreasing diagrams in the theorem prover Isabelle. It discusses mechanical proofs showing that any locally decreasing abstract rewrite system is confluent. The valley and the conversion version of decreasing diagrams are considered.