Inequalities associating hypergeometric functions with planar harmonic mappings.
Let be harmonic spaces of Brelot with countable base of completely determining domains. The elements of a subcone of the cone of positive -superharmonic functions in is shown to have an integral representation with the aid of Radon measures on the extreme elements belonging to a compact base of . The extreme elements are shown to be the product of extreme superharmonic functions on the component spaces and the measure representing each element is shown to be unique. Necessary and sufficient...
We extend the Rado-Choquet-Kneser theorem to mappings with Lipschitz boundary data and essentially positive Jacobian at the boundary without restriction on the convexity of image domain. The proof is based on a recent extension of the Rado-Choquet-Kneser theorem by Alessandrini and Nesi and it uses an approximation scheme. Some applications to families of quasiconformal harmonic mappings between Jordan domains are given.