Definition: A function \(f:\real^d \to \real\) is called uniformly continuous if for all \(\eps > 0\), there exists \(\delta > 0\) such that for all \(\x, \y \in \real^d: \norm{\x-\y} < \delta\), we have \(\abs{f(\x)-f(\y)} < \eps\).
See also: uniform convergence.