Rel, bicategory of relations, allegory
left and right euclidean;
extensional, well-founded relations.
A (binary) relation on a set is reflexive if every element of is related to itself:
In the language of the -poset Rel of sets and relations, a relation is reflexive if it contains the identity relation on :
A set with a reflexive relation is the same as a loop digraph with function such that
reflexive relation, irreflexive relation
Last revised on September 22, 2022 at 16:21:06. See the history of this page for a list of all contributions to it.