We provide a finite set of axioms for identity-free Kleene lattices, which we prove sound and complete for the equational theory of their relational models. Our proof builds on the completeness theorem for Kleene algebra, and on a novel automata construction that makes it possible to extract axiomatic proofs using a Kleene-like algorithm.
@InProceedings{doumane_et_al:LIPIcs.CONCUR.2018.18, author = {Doumane, Amina and Pous, Damien}, title = {{Completeness for Identity-free Kleene Lattices}}, booktitle = {29th International Conference on Concurrency Theory (CONCUR 2018)}, pages = {18:1--18:17}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-087-3}, ISSN = {1868-8969}, year = {2018}, volume = {118}, editor = {Schewe, Sven and Zhang, Lijun}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2018.18}, URN = {urn:nbn:de:0030-drops-95564}, doi = {10.4230/LIPIcs.CONCUR.2018.18}, annote = {Keywords: Kleene algebra, Graph languages, Petri Automata, Kleene theorem} }
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