IDENTITY AND CARDINALITY OF SETS

IDENTITY AND CARDINALITY OF SETS

 
Equality of sets or Identity of sets is defined as set is said to be equal to set if both sets have the same elements or members of the sets, i.e. if each element of set also belongs to each element of set , and each element of set also belongs to each element of set . Mathematically it can be written as A ⊂ B and B ⊂ A
In mathematics, the cardinality of a set is a measure of the "number of elements of the set". For example, the set A = {2, 4, 16,24} contains 4 elements, and therefore A has a cardinality of 4.