DrDelMath
SYMBOLS WITH SPECIAL MEANING
AS USED IN MATHEMATICS
Symbol 
Meaning 
Example 
Read
as 
= 
is equal to  3 + 4 = 7  3 plus 4 is equal to 7 
is not equal to  3 + 4 5  3 plus 4 is not equal to 5  
< 
is less than  5 < 8  5 is less than 8 
is less than or equal to  x 8  x is less than or equal to 8  
> 
is greater than  8 >3  8 is greater than 3 
is greater than or equal to  x y  x is greater than or equal to y  
is an element of  5 {3, 4, 5, 8}  5 is an element of the set {3, 4, 5, 8}  
is not an element of  5 {3, 4, 8}  5 is not an element of the set {3, 4, 8}  
the null set  
is a proper subset of, is properly contained in 
A {3,
4, 8} 
The set A is a proper subset of the set {3, 4, 8} The set A is properly contained in the set {3, 4, 8} 

is a subset of, is contained in  A {3,
4, 8} 
The set A is a proper subset of the set {3, 4, 8} The set A is properly contained in the set {3, 4, 8} 

is a proper superset of , properly contains 
B {a, b, p, y}  The set B is a proper superset of the set {a, b, p, y} The set B properly contains the set {a, b, p, y} 

is a superset of, contains 
B {a, b, p, y}  The set B is a proper superset of the set {a, b, p, y} The set B properly contains the set {a, b, p, y} 

union of sets  A B  The union of sets A and B  
intersection of sets  A B  The intersection of sets A and B  
implies  3 + 4 = x x = 7  3 plus 4 is equal to x implies x is equal to 7  
is implied by  x = 5 5x = 25  x is equal to 5 is implied by the equation 5x = 25  
is equivalent to  3x + 2 = 53x = 3  The equation 3x + 2 = 5 is equivalent to the equation 3x = 3 
