Spectral Nevanlinna-Pick problem and weak extremals in the symmetrized bidisc
arXiv:1404.1067
Abstract
The main goal of the paper is to study -extremal mappings in the symmetrized bidisc showing that they are rational and $\GG_2$-inner which, in particular, answers a question posed in \cite{Agl-Lyk-You 2013}.
I learned that one of the results in the previous veesrion of the preprint was already known and I removed it