Joó, I.; Liflyand, E. Approximation in \(L^{\infty}\) on the real line. (English) Zbl 0908.41006 Acta Sci. Math. 64, No. 1-2, 171-181 (1998). Reviewer: Walter Trebels (Darmstadt) MSC: 41A25 42A50 26A16 PDFBibTeX XMLCite \textit{I. Joó} and \textit{E. Liflyand}, Acta Sci. Math. 64, No. 1--2, 171--181 (1998; Zbl 0908.41006)
Joó, I.; Szabó, V. E. S. A generalization of Pál interpolation process. (English) Zbl 0830.41004 Acta Sci. Math. 60, No. 3-4, 429-438 (1995). MSC: 41A05 PDFBibTeX XMLCite \textit{I. Joó} and \textit{V. E. S. Szabó}, Acta Sci. Math. 60, No. 3--4, 429--438 (1995; Zbl 0830.41004)
Joó, I. On the pointwise controllability of circular membranes. (English) Zbl 0925.93415 Acta Sci. Math. 57, No. 1-4, 373-399 (1993). MSC: 93C20 93B05 74K20 PDFBibTeX XMLCite \textit{I. Joó}, Acta Sci. Math. 57, No. 1--4, 373--399 (1993; Zbl 0925.93415)
Joó, István Note on multiplicative functions satisfying a congruence property. (English) Zbl 0666.10001 Acta Sci. Math. 55, No. 3-4, 301-308 (1991). Reviewer: István Joó (Budapest) MSC: 11A25 11A07 PDFBibTeX XMLCite \textit{I. Joó}, Acta Sci. Math. 55, No. 3--4, 301--308 (1991; Zbl 0666.10001)
Alimov, Š. A.; Joó, I. On the convergence of eigenfunction expansions in \(H^ s\)-norm. (English) Zbl 0593.35030 Acta Sci. Math. 48, 5-12 (1985). Reviewer: W.D.Evans MSC: 35J10 35P99 35P10 81U10 PDFBibTeX XMLCite \textit{Š. A. Alimov} and \textit{I. Joó}, Acta Sci. Math. 48, 5--12 (1985; Zbl 0593.35030)
Joó, I. Remarks to a paper of V. Komornik. (English) Zbl 0591.34024 Acta Sci. Math. 47, 201-204 (1984). Reviewer: B.D.Sleeman MSC: 34L99 47E05 PDFBibTeX XMLCite \textit{I. Joó}, Acta Sci. Math. 47, 201--204 (1984; Zbl 0591.34024)
Alimov, Š. A.; Joó, I. On the Riesz summability of eigenfunction expansions. (English) Zbl 0554.35030 Acta Sci. Math. 45, 5-18 (1983). Reviewer: J.R.Kuttler MSC: 35J10 35P10 47F05 PDFBibTeX XMLCite \textit{Š. A. Alimov} and \textit{I. Joó}, Acta Sci. Math. 45, 5--18 (1983; Zbl 0554.35030)
Joó, I.; Stachó, L. L. Two remarks on pointwise periodic topological mappings. (English) Zbl 0545.54026 Acta Sci. Math. 46, 377-379 (1983). MSC: 54C10 54F05 54D30 PDFBibTeX XMLCite \textit{I. Joó} and \textit{L. L. Stachó}, Acta Sci. Math. 46, 377--379 (1983; Zbl 0545.54026)
Joó, I.; Komornik, V. On the equiconvergence of expansions by Riesz bases formed by eigenfunctions of the Schrödinger operator. (English) Zbl 0537.34019 Acta Sci. Math. 46, 357-375 (1983). MSC: 34L99 47A70 42A16 47E05 PDFBibTeX XMLCite \textit{I. Joó} and \textit{V. Komornik}, Acta Sci. Math. 46, 357--375 (1983; Zbl 0537.34019)
Joo, I. Upper estimates for the eigenfunctions of the Schrödinger operator. (English) Zbl 0524.34027 Acta Sci. Math. 44, 87-93 (1982). MSC: 34L99 PDFBibTeX XMLCite \textit{I. Joo}, Acta Sci. Math. 44, 87--93 (1982; Zbl 0524.34027)
Joo, I. A simple proof for von Neumann’s minimax theorem. (English) Zbl 0436.49016 Acta Sci. Math. 42, 91-94 (1980). MSC: 49K35 49K27 47H10 PDFBibTeX XMLCite \textit{I. Joo}, Acta Sci. Math. 42, 91--94 (1980; Zbl 0436.49016)
Joo, I.; Tandori, K. A remark on convergence of orthogonal series. (English) Zbl 0341.42014 Acta Sci. Math. 38, 305-309 (1976). MSC: 42C15 40A05 PDFBibTeX XMLCite \textit{I. Joo} and \textit{K. Tandori}, Acta Sci. Math. 38, 305--309 (1976; Zbl 0341.42014)
Joo, I. A remark on convergence systems in measure. (English) Zbl 0341.40003 Acta Sci. Math. 38, 301-303 (1976). MSC: 40A05 40H05 PDFBibTeX XMLCite \textit{I. Joo}, Acta Sci. Math. 38, 301--303 (1976; Zbl 0341.40003)