<Ul> <Li> The notation a ≤ b means that a is less than or equal to b (or, equivalently, not greater than b, or at most b); "not greater than" can also be represented by the symbol for "greater than" bisected by a vertical line, "not ." (The unicode for ≤ is "U+ 2264".) </Li> <Li> The notation a ≥ b means that a is greater than or equal to b (or, equivalently, not less than b, or at least b),; "not less than" can also be represented by the symbol for "less than" bisected by a vertical line, "not ." (The unicode for ≥ is "U+ 2265".) </Li> </Ul> <Li> The notation a ≤ b means that a is less than or equal to b (or, equivalently, not greater than b, or at most b); "not greater than" can also be represented by the symbol for "greater than" bisected by a vertical line, "not ." (The unicode for ≤ is "U+ 2264".) </Li> <Li> The notation a ≥ b means that a is greater than or equal to b (or, equivalently, not less than b, or at least b),; "not less than" can also be represented by the symbol for "less than" bisected by a vertical line, "not ." (The unicode for ≥ is "U+ 2265".) </Li> <P> In engineering sciences, a less formal use of the notation is to state that one quantity is "much greater" than another, normally by several orders of magnitude . </P>

What is greater than or equal to sign