Conjunction and disjunction are not affected by sequential change. Figure below shows the circuit diagram correspondent to this law.
Commutation:
a + b = b + a
a x b = b x a
Mathematic Notation:
a ∪ b = b ∪ a
a ∩ b = b ∩ a
Logic Notation:
a ∨ b = b ∨ a
a ∧ b = b ∧ a