relation_mathematics (263B)
1 # Relation (mathematics) 2 3 A relation on a set X is a subset of X times X ([cartesian_product]) 4 5 - [relation_symmetric] 6 - [relation_reflexive] 7 - [relation_transitive] 8 9 Up: [mathematics] 10 11 See also: [graph_directed], [composition_law] 12 13 Aliases: mathematics relation