SYMBOLS

SYMBOLS is equal to ! is not equal to less than # less than or equal to greater than $ greater than or equal to equivalent to j union k intersection U universal Set belongs to does not belong to proper subset of subset of or is contained in Y not a proper subset of M not a subset of or is not contained in A l (or) A complement of A Q (or) { } empty set or null set or void set n ( A ) number of elements in the set A P ( A ) power set of A