What is the meaning of equal set?

Equal sets are sets that contain exactly the same elements. For two sets to be considered equal, every element of one set must be present in the other set, and vice versa. This is denoted as ( A = B ) if sets ( A ) and ( B ) have identical members, regardless of the order or repetition of those elements. For example, the sets {1, 2, 3} and {3, 2, 1} are equal.