Publikációk

[1] Estimate of the rate of mean convergence of Hermite interpolating processes. Publ. Math. Debrecen 39 (1991), no. 3-4, 339-345.

[2] On L_p -norm convergence of Hermite interpolation based on the roots of Jacobi, Hermite, Laguerre and Sonin-Markov polynomials. Studia Sci. Math. Hungar. 27 (1992), no. 3-4, 391-401.

[3] -I. Joó: On the estimate (x_min+x_max)/2. Studia Sci. Math. Hungar. 27 (1992), no. 3-4, 409-432.

[4] -M. B. Tahir: On the Fejér summability of eigenfunction expansions. Ann. Univ. Sci. Budapest. Eötvös Sect. Math. 35 (1992), 157-188.

[5] -I. Joó-M. B. Tahir: A basis theorem for ordinary differential operator of n th order. Ann. Univ. Sci. Budapest. Eötvös Sect. Math. 36 (1993), 103-127.

[6] -I. Joó: On the estimate (x_min+x_max)/2. II. Studia Sci. Math. Hungar. 28 (1993), no. 3-4, 321-338.

[7] -I. Joó: Remark of additive functions. Ann. Univ. Sci. Budapest. Eötvös Sect. Math. 37 (1994), 165-170.

[8] A fixed point theorem. Ann. Univ. Sci. Budapest. Eötvös Sect. Math. 37 (1994), 197-198.

[9] A note on my paper: ``A fixed point theorem''. Octogon Math. Mag. 3 (1995), no. 2, 17-19.

[10] -I. Joó: A generalization of Pál interpolation process. Acta Sci. Math. (Szeged) 60 (1995), no. 3-4, 429-438.

[11] Mean convergence of Lagrange interpolation. Indian J. Pure Appl. Math. 27 (1996), no. 11, 1077-1085.

[12] A note to a theorem of Talaljan. Acta Math. Hungar. 73 (1996), no. 4, 263-275.

[13] -J. Sándor: On an inequality for the sum of infimums of functions. J. Math. Anal. Appl. 204 (1996), no. 3, 646-654.

[14] A minimax theorem for two functions. Ann. Univ. Sci. Budapest. Eötvös Sect. Math. 39 (1996), 29-33.

[15] A generalization of Pál interpolation process. II. Acta Math. Hungar. 74 (1997), no. 1-2, 19-29.

[16] A generalization of Pál interpolation. III. The Hermite case. Acta Math. Hungar. 74 (1997), no. 3, 191-201.

[17] A generalization of Pál interpolation. IV. The Jacobi case. Acta Math. Hungar. 74 (1997), no. 4, 287-300.

[18] On Pál-type interpolation processes. Approximation and optimization, Proceedings of the International Conference on Approximation and Optimization, D.D.Stancu, Gh. Coman, W.W.Breckner, P.Blaga (eds.) Vol. II (Cluj-Napoca, 1996), 21-26, Transilvania Press, Cluj-Napoca, 1997.

[19] -J. Sándor: On certain means. Octogon Math. Mag. 7 (1999), no. 1, 58-65.

[20] Weighted interpolation: the L_∞ theory. I. Acta Math. Hungar. 83 (1999), no. 1-2, 131-159.

[21] A sharp estimation for Bernstein polynomials. (manuscript)

[22] A class of matrix monotone functions. Linear Algebra and its Applications 420 (2007), 79-85. (impact: 0.501) [pdf]

[23] - D. Petz, From quasi-entropy to skew information Int. J. Math. 20 (2009), 1421-1430. [pdf]

[24] Characterization of polynomials Analysis and Applications
[25] Inequalities for Trigonometric Sums in Two Variables (manuscript)
[26]