\nleqslant
The symbol \nleqslant is used to denote that one quantity is not less than or equal to another. It is a negated relation symbol, often used in mathematical expressions to indicate that a certain inequality does not hold.
Indicates that x is not less than or equal to y.
x \nleqslant y
Shows that the sum of squares of a and b is not less than or equal to the square of c.
a^2 + b^2 \nleqslant c^2
Expresses that m is not less than or equal to n.
m \nleqslant n