Which of the following statements is false ?
If R is relexive, then R ∩ R-1 ≠ φ
R ∩ R-1 ≠ φ =>R is anti-symmetric.
If R, R' are equivalence relations in a set A, then R ∩ R' is also an equivalence relation in A.
If R, R' are relexive relations in A, then R - R' is reflexive