Recent zbMATH articles in MSC 41A20https://www.zbmath.org/atom/cc/41A202022-05-16T20:40:13.078697ZWerkzeugConverse theorem of the approximation theory of functions in Morrey-Smirnov classes related to the derivatives of functionshttps://www.zbmath.org/1483.410082022-05-16T20:40:13.078697Z"Jafarov, Sadulla Z."https://www.zbmath.org/authors/?q=ai:jafarov.sadulla-zSummary: Let \(G \subset C\) be a finite Jordan domain with a Dini-smooth boundary. In this study an inverse theorem for polynomial approximation in the Morrey-Smirnov spaces \(E^{p,\lambda}(G)\), \(0< \lambda \leq 1\) and \(1< p <\infty \), is proved.