Conformally Invariant Besov Spaces on Chord-Arc Domains
Let $Γ$ be a rectifiable Jordan curve. We introduce the associated Besov $p$-spaces on $Γ$ and in its complementary domains, and characterize chord-arc curves by the natural trace isomorphisms among these spaces. We prove the characterization for the previously unresolved range $1<p<2$, thereby extending the known results $p\geq2$ to $1<p<\infty$. We further give an alternative proof for $p\geq2$.
math.CV↗