≦: it means that the left side of the equation is not equal to the right side, and it can be greater than or less than, and only pays attention to whether it is equal, such as A≠B, which means that A and B are not equal;

>: indicates that the left side of the equation is greater than the right side, such as A>b, indicating that A is greater than B;

≤: indicates that the left side of the equation is less than or equal to the right side, such as A≤B, indicating that A is less than or equal to B;

≥: indicates that the left side of the equation is greater than or equal to the right side. For example, A≥B means that A is greater than or equal to B. ..

So ≠ can contain, but does not contain the meaning expressed by ≤ or ≥;

On the other hand, there is no or less meaning.