Show that a relation R on a set X is symmetric if and only if there is a directed edge from x to y in the digraph of R, there is a directed edge from y to x in the digraph of R.

- Aug 17th 2006, 06:51 AMColettethis q is similar to another question but is actually different
Show that a relation R on a set X is symmetric if and only if there is a directed edge from x to y in the digraph of R, there is a directed edge from y to x in the digraph of R.

- Aug 17th 2006, 06:54 AMThePerfectHacker