The $A_{\infty }$ condition, $\epsilon$-approximators, and Varopoulos extensions in uniform domains

Simon Bortz, Bruno Poggi, Olli Tapiola +1

Suppose that $\Omega \subset {\mathbb{R}}^{n+1}$, $n\ge 1$, is a uniform domain with $n$-Ahlfors regular boundary and $L$ is a (not necessarily symmetric) divergence form elliptic, real, bou…