@InProceedings{doumane:LIPIcs.MFCS.2021.41, author = {Doumane, Amina}, title = {{Graph Characterization of the Universal Theory of Relations}}, booktitle = {46th International Symposium on Mathematical Foundations of Computer Science (MFCS 2021)}, pages = {41:1--41:15}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-201-3}, ISSN = {1868-8969}, year = {2021}, volume = {202}, editor = {Bonchi, Filippo and Puglisi, Simon J.}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.MFCS.2021.41}, URN = {urn:nbn:de:0030-drops-144815}, doi = {10.4230/LIPIcs.MFCS.2021.41}, annote = {Keywords: Relation algebra, Graph homomorphism, Equational theories, First-order logic} }