@InProceedings{doumane_et_al:LIPIcs.CONCUR.2020.29,
author = {Doumane, Amina and Pous, Damien},
title = {{Non Axiomatisability of Positive Relation Algebras with Constants, via Graph Homomorphisms}},
booktitle = {31st International Conference on Concurrency Theory (CONCUR 2020)},
pages = {29:1--29:16},
series = {Leibniz International Proceedings in Informatics (LIPIcs)},
ISBN = {978-3-95977-160-3},
ISSN = {1868-8969},
year = {2020},
volume = {171},
editor = {Konnov, Igor and Kov\'{a}cs, Laura},
publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
address = {Dagstuhl, Germany},
URL = {https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2020.29},
URN = {urn:nbn:de:0030-drops-128411},
doi = {10.4230/LIPIcs.CONCUR.2020.29},
annote = {Keywords: Relation algebra, graph homomorphisms, (in)equational theories}
}