Hölder space
= Hölder space
{c}
{title2=$C^{0,\alpha}$}
A <Hölder space> consists of functions satisfying a <Hölder condition>. A bounded function belongs to $C^{0,\alpha}(\mathbb R^n)$ when
$$
\sup_{x\ne y}\frac{|f(x)-f(y)|}{|x-y|^\alpha}<\infty.
$$