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} |
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the null set |
|
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|
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 = 5 3x
= 3 |
The equation 3x + 2 = 5 is equivalent to the
equation 3x = 3 |
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