\gneqq
The symbol \gneqq is used in mathematical expressions to denote 'greater than but not equal to'. It is a negated relation that indicates one quantity is strictly greater than another, without the possibility of equality.
x is greater than but not equal to y
x \gneqq y
The square of a is greater than but not equal to the square of b
a^2 \gneqq b^2
The function f(x) is greater than but not equal to the function g(x) for certain values of x
f(x) \gneqq g(x)