Zeev Ditzian,Professor of Mathematics
Publications: Research Articles 1990-94

[76] W. Chen and Z. Ditzian, Mixed and directional derivatives,Proc. Amer. Math. Soc. 108 (1990), 177-185.

[77] Z. Ditzian, A new fractional form of the Landau-Kolmogorov inequality, J. Math. Anal. and Appl. 148 (1990), 528-537.

[78] Z. Ditzian and X. Zhou, Kantorovich-Bernstein polynomials, Constructive Approximation 6 (4) (1990), 421-435.

[79] Z. Ditzian and V. Totik, K-functionals and weighted moduli of smoothness, J. Approx. Theory 63 (1) (1990), 3-29.

[80] Z. Ditzian, Equivalence of rate of approximation and smoothness, J. Approx. Theory 62 (3) (1990), 316-339.

[81] Z. Ditzian, A measure of smoothness related to the Laplacian, Trans. Am. Math. Soc.326 (1991), 407422.

[82] W. Chen and Z. Ditzian, Best polynomial and Durrmeyer approximation in Lp(S), Indag. Mathem. N.S. 4 (1992), 437-452.

[83] W. Chen and Z. Ditzian, Multivariate Durrmeyer-Bernstein operators, Israel Mathematics Conference Proceedings 4 (1992), 109-119.

[84] Z. Ditzian and D. Jiang, Approximation of functions by polynomials in C[-1,1], Canad J. Math. 4 (1992), 924-940.

[85] Z. Ditzian, Multivariate Bernstein and Markov inequalities, Jour. of Approximation Theory 70 (1992), 273-283.

[86] Z. Ditzian, D. Jiang and D. Leviatan, Shape preserving polynomial approximation in C[-1,1], Math. Proc. Camb. Phi. Soc. 112 (1992), 309-316.

[87] Z. Ditzian and X. Zhou, Optimal approximation class for multivariate Bernstein operators, Pacific Jour. of Math. 158 (1993), 93-120.

[88] W. Chen and Z. Ditzian, A note on Bernstein-Durrmeyer operator in L_2(S),Jour. of Approx. Theory 72 (1993), 234-236.

[89] Z. Ditzian and K. Ivanov, Minimal number of significant directional moduli of smoothness, Analysis Mathematica 19 (1993), 13-27.

[90] Z. Ditzian and K. Ivanov, Strong converse inequalities, Journal d'Analyse Math. 61 (1993), 61-111.

[91] Z. Ditzian, D. Jiang and D. Leviatan, Simultaneous polynomial approximation,SIAM J. Math. Anal. 24 (6) (1993), 1652-1661.

[92] Z. Ditzian, Rate of approximation, smoothness and K-functionals, Rendiconti del circolo Matematico di Palermo, Series 1133 (1993), 63-74.

[93] W. Chen, Z. Ditzian and K. Ivanoy, Strong converse inequality for the Bernstein-Durrmeyer operator, J. of Approx. Theory 75 (1) (1993), 25-43.

[94]W. Chen and Z. Ditzian, Strong converse inequality for Kantorovich polynomial, Constr. Approx. 10 (1994), 94-106.

[95] Z. Ditzian, D. Jiang and D. Leviatan, Inverse theorem for best polynomial approximation in Lp, O < 1, Proc. Amer. Math. Soc. 120 (1) (1994), 15 1-155.

[96] Z. Ditzian, Direct estimate for Bernstein polynomials, J. Approx. Theory 79 (1994), 165-166.