What does neq 0 mean in math

In mathematics, "neq 0" is shorthand notation that means "not equal to zero." It is often used in inequalities or conditions where a certain variable or expression must not equal zero. For example, if you see an expression like \( x \neq 0 \), it indicates that \( x \) can take on any value except for zero. This is important in many contexts, such as when dealing with denominators in fractions (to avoid division by zero) or when defining certain functions where specific values must be excluded.