Binary Relations among Elements in a Set

number of elements

7

new relation

domain D

range R

D⋃R

composition R ∘ R

Binary asymmetric relations

R

connecting two elements in a set are indicated by red arrows. This Demonstration shows the domain

D

(light blue), range (or image)

R

(light red) or

D⋃R

(green) associated with such a relation. Blue arrows show the composition of the relation with itself (

R◦R

).