منابع مشابه
Decreasing Diagrams
This theory contains a formalization of decreasing diagrams showing that any locally decreasing abstract rewrite system is confluent. We consider the valley (van Oostrom, TCS 1994) and the conversion version (van Oostrom, RTA 2008) and closely follow the original proofs. As an application we prove Newman’s lemma. A description of this formalization is available in [3].
متن کاملProof Orders for Decreasing Diagrams
We present and compare some well-founded proof orders for decreasing diagrams. These proof orders order a conversion above another conversion if the latter is obtained by filling any peak in the former by a (locally) decreasing diagram. Therefore each such proof order entails the decreasing diagrams technique for proving confluence. The proof orders differ with respect to monotonicity and compl...
متن کاملDecreasing - Diagrams Harald Zankl
This theory contains a formalization of decreasing diagrams showing that any locally decreasing abstract rewrite system is confluent. We consider the valley (van Oostrom, TCS 1994) and the conversion version (van Oostrom, RTA 2008) and closely follow the original proofs. As an application we prove Newman’s lemma. A description of this formalization is available in [3].
متن کاملDecreasing Diagrams II
This theory formalizes a commutation version of decreasing diagrams for Church-Rosser modulo. The proof follows Felgenhauer and van Oostrom (RTA 2013). The theory also provides important specializations, in particular van Oostrom’s conversion version (TCS 2008) of decreasing diagrams. We follow the development described in [1]: Conversions are mapped to Greek strings, and we prove that whenever...
متن کاملDecreasing Diagrams Converted
The decreasing diagrams technique is a complete method to reduce confluence of a rewrite relation to local confluence. Whereas previous presentations have focussed on the proof the technique is correct, here we focus on applicability. We present a simple but powerful generalisation of the technique, requiring peaks to be closed only by conversions instead of valleys, which is demonstrated to fu...
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ژورنال
عنوان ژورنال: Journal of Automated Reasoning
سال: 2014
ISSN: 0168-7433,1573-0670
DOI: 10.1007/s10817-014-9316-y