Inverse Relation Let R be a relation from A to B. The inverse relation of R,denoted by R^(-1) is a relation from B to A and is denoted by
: x ɛ A, yɛ
R}. In other words, the inverse relation is obtained by reversing each of the ordered pairs belong to R Thus, (x,y) ɛ R <=> (y, x) ɛ R^(-1) Evidently, the range of R is the domain of R and vice-versa. If A=B, then R and R are both relations on A.