2005/11/14 by А. Г. Рамм, Ramm, A. G.
Mathematics · #Rings, Modules, and Algebras
paper · pdf · doi:10.48550/arxiv.math/0511353
An improvement of the author's result, proved in 1961, concerning necessary and sufficient conditions for the compactness of embedding operators is given. A counterexample to a published statement concerning compactness of embedding operators is constructed.