EntityQ621850· pop 38· linked from 241 articlesreflexive relationSign in to savebinary relation over a set in which every element is related to itselfConnectionssubsetEntitypartially ordered setEntityweak orderingEntitytotal orderEntitysemilatticeEntitymathematicsEntityBertrand RussellEntityInternational Standard Book NumberEntitynatural numberEntityintegerEntityreal numberEntitysetEntitydigital object identifierEntityOxford English DictionaryEntityCharles Sanders PeirceEntityparityEntityreflexEntitydivisorEntityGiuseppe PeanoEntityequivalence relationEntityCategoriesProperties of binary relationsReflexive relations