Convergence problems of orthogonal series / G. Alexits ; translated by I. Földes. Konvergenzprobleme der Orthogonalreihen. English Alexits, György, 1899- Convergence. Series, Orthogonal. QA404.5 .A553 1961a 517.35 ALC Includes index. Bibliograph: p. 339-347 [Budapest] Pub. House of the Hungarian Academy of Sciences Oxford ; New York : Pergamon, [1961] 1961. [1961] 1961. 1961 Text ix, 350 p. ; eng eng ger