2. A>b is A greater than B.

3.a < b means that a is less than B.

4. For any two real numbers A and B, their corresponding points A can be found on the same axis. If point a is to the right of point b, then A >；; B.

5. For any two real numbers A and B, their corresponding points A and B can be found on the same axis. If point a is to the left of point b, then a

Dayu Hao

"> and less than sign"

Any number (full name quantifier)? Derived from the English word Arbitrary, because lowercase and uppercase are easily confused, the first letter of the word is capitalized and then inverted. Similarly, existential number (existential quantifier)? Reverse writing of e from the word Exist.