Fractional Heat Semigroup Characterization of Distances from Functions in Lipschitz Spaces to Their Subspaces

Feng Dai, Eero Saksman, Dachun Yang +2

Let ${\Lambda }_s$ denote the inhomogeneous Lipschitz space of order $s\in (0,\infty )$ on ${\mathbb{R}}^n$. This article characterizes the distance $d(f, V)_{Λ_s}: = \inf_{g\in V} \|f-g\|_{Λ_s…