2 problems

Let $X$ and $Y$ be suitable metric spaces, and consider domains in them together with weakly quasisymmetric mappings, freely quasiconformal mappings, and related mappings. Subinvar…

Let $\Omega\subset {\mathbb{R}}^n$, with $n\geq 2$, be an $s$-John domain. Let $\delta\in(0,1)$, $1\leq p<n/\delta$, and $s<\frac{n}{n-p\delta}$. The fractional $(q,p)$-Sobolev-Poi…