Set distinction of U and A, indicated U \\ A, is the arrangement of all individuals from U that are not individuals from A. The set contrast {1, 2, 3} \\ {2, 3, 4} is {1}, while on the other hand, the set distinction {2, 3, 4} \\ {1, 2, 3} is {4}. At the point when A will be a subset of U, the set distinction U \\ An is likewise called the supplement of An in U For this situation, assuming that the decision of U is obvious from the specic circumstance, the documentation Ac is now and again utilized rather than U \\ A, especially on the off chance that U is a widespread set as in the investigation of Venn graphs