Estimates for conformal capacity
Let \(a,b,c,d\) be the distinct points on \(\overline{\mathbb{R}^n}\). The authors denote the minimal conformal capacity of all rings \((E,F)\) with \(a,b\in E\) and \(c,d\in F\). Among other things, they prove a theorem which gives a sharp upper bound for the minimal conformal capacity when \(n=2\).
scientific article; zbMATH DE number 1525174