Explain the two graphs in relations , inverse and direct image , R inverse
Explain the two graphs in relations , inverse and direct image , R inverse Equivalence
A relation from a set of X to a
set r is a subset R of X x Y
b) e R. we say a is related
to b and Often write it as a R b.
If X Y. We say that R is rela-
(ion on X.
Let R a relation from X to
Y. For each subset A Of X, We
and call it the (direct) image of A under R. and for each
subset B of Y. we write R (B) = X : x R y forsomcy
e B) and call it the inverse Onageof B under R.
The relation R on
symmetric as 3 i
R is reflexive.
The number o
on a set contauu
A relation F