Show that the closure with respect to the property P of
the relation R = {(0, 0), (0, 1), (1, 1), (2, 2)} on the set
{0, 1, 2} does not exist if P is the property
a) “is not reflexive.”
b) “has an odd number of elements.”
I got the first part, since the relation already is reflexive we can't find a closure for "is not reflexive", but what is meant by closure in the 2nd part?
