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List of Publications

  1. "A generalized moment problem of self-adjoint operators", Israel J. Math. 4 (1966), 113-118.
  2. "Generalized Bernstein polynomials" (with A. Jakimovski), Math. Z. 93 (1966), 416-426.
  3. "On Hausdorff and related moment problems" (with A. Jakimovski and M. S. Ramanujan), Publ. Math., Debrecen 13 (1966), 17-23.
  4. "A generalized moment problem", Israel J. Math. 5 (1967), 97-103.
  5. "Generalized Bernstein power-series" (with A. Jakimovski), Math. Z. 96 (1967), 333-342.
  6. "A property of approximation operators and applications to Tauberian constants" (with A. Jakimovski), Math. Z. 102 (1967), 177-204.
  7. "Tauberian constants for generalized Hausdorff transformations", J. London Math. Soc. 43 (1968), 308-314.
  8. "Some moment problems in a finite interval", Canadian J. Math. 20 (1968), 960-966.
  9. "Moment problems and quasi-Hausdorff transformations", Canadian Math. Bull. 11 (1968), 225-236.
  10. "On approximation operators of the Bernstein type", J. Approx. Theory 1 (1968), 275-278.
  11. "Completeness and approximation operators" (with A. Jakimovski), Publ. Ramanujan Institute No. 1 (1969), 123-129.
  12. "On the representation of functions as Laplace integrals", J. London Math. Soc. 44 (1969), 88-92.
  13. "On moment sequences of operators", Illinois J. Math. 13 (1969), 249-255.
  14. "Some Tauberian theorems for quasi-Hausdorff transforms", Math. Z. 108 (1969), 213-222.
  15. "On a representation theorem and application to moment sequences in locally convex spaces", Math. Ann.  182 (1969), 251-262.
  16. "Tauberian theorems concerning transformations", Tôhoku Math. J. 21 (1969), 389-405.
  17. "A characterization of totally regular [J, f(x)] transformations" (with L. Lorch), Proc. Amer. Math. Soc.  23 (1969), 315-319.
  18. "Generalized Szász operators for the approximation in the infinite interval" (with A. Jakimovski), Mathematica (Cluj) 11 (34) (1969), 97-103.
  19. "On the remainder in the approximation of functions by Bernstein-type Operators", J. Approx. Theory 2 (1969), 400-409.
  20. "Some applications of the Gamma-operators" (with M. Müller), Archiv der Math. 20 (1969), 638-647.
  21. "Tauberian estimates for the differences of Hausdorff and of quasi-Hausdorff transforms", J. London Math. Soc. (2) 2 (1970), 1-13.
  22. "Gibbs phenomenon and Lebesgue constants for regular [J, f(x)] means" (with L. Lorch), Acta Math. Hungarica 21 (1970), 64-85.
  23. "Moment problems with functions in some köthe spaces", J. Math. Analysis and Appl. 30 (1970), 295-307.
  24. "Absolute Tauberian conditions for absolute Hausdorff and quasi-Hausdorff methods", Israel J. Math.  8 (1970), 138-146.
  25. "The moment problems for operators in Banach spaces" (with M. S. Ramanujan), Indiana Univ. Math. J. 20 (1970), 97-106.
  26. "A new approach to representation theory for convolution transforms", Pacific J. Math. 35 (1970), 441-449.
  27. "An application of a convolution transform to the sequece to function analogues of Hausdorff transformations", J. d'Analyze Math. 24 (1971), 173-189.
  28. "A generalization of the Mean Ergodic Theorem" (with M. S. Ramanujan), Studia Math. 39 (1971), 113-117.
  29. "Remarks on some Tauberian theorems of Meyer-König, Tietz and Stieglits"Proc. Amer. Math. Soc. 29 (1971), 126-132.
  30. "On the connectedness of the sets of limit points of certain transforms of bounded sequences" (with L. Lorch), Canadian Math. Bull. 14 (1971), 175-181.
  31. "A representation theorem and approximation operators arising from inequalities involving differential operators", Trans. Amer. Math. Soc. 168 (1972), 85-99.
  32. "On Gamma-type approximation Operators", Math. Z.  124 (1972), 208-212.
  33. "On the representation of the remainder in the variation-diminishing spline approximation", J. Approx. Theory 7 (1973), 63-70.
  34. "Generalized polynomial approximation" (with J. Bak, D. J. Newman and J. Tzimbalario), Israel J. Math.  15 (1973), 337-349.
  35. "Some vector valued Laplace transforms", Israel J. Math. 16 (1973), 73-86.
  36. "Representation of functions related to generalized completely monotonic functions", J. London Math. Soc. (2) 7 (1973), 407-416.
  37. "Saturation and the mean ergodic theorem" (with U. Westphal), Mathematica (Cluj) 15 (38) (1973), 83-88.
  38. "On the Jackson Müntz theorem", J. Approx. Theory 10 (1974), 1-5.
  39. "Saturation theorems related to the mean ergodic theorem", Indiana Univ. Math. J. 24 (1974), 86-91.
  40. "Remarks on some representation theorems for convolution transforms", Rendiconti Academia Nazionale dei Lincei 54 (1974), 382-386.
  41. "The Müntz-Jackson approximation theorem", ISNM 25 Birkh\"auser (1974), 353-361.
  42. "On restricted best approximation to functions with restricted derivatives" (with E. Kimchi), SIAM J. on Numer. Analysis 13 (1976), 51-53.
  43. "Approximation by polynomials with restricted coefficients", Approx. Theory, II, Proc. Conference on Approx. Theory, Austin, Texas 1976, G.G. Lorentz, C.K. Chui and L.L. Schumaker, eds., Academic Press (1976), 417-422.
  44. "A representation theorem for convolution transform with determining function in L_p" (with Ch. Danon), Pacific J. Math. 62 (1976), 81-86.
  45. "On the rate of approximation by polynomials with complex exponents", J. London Math. Soc. (2) 15 (1977), 305-318.
  46. "The rate of approximation of functions by means of polynomials with restricted coefficients" (with J. Bak and M. v. Golitschek), Israel J. Math. 26 (1977), 265-275.
  47. "Permissible bounds on the coefficients of approximating polynomials with real or complex exponents" (with M. v. Golitschek), J. Math. Analysis and Appl. 60 (1977), 123-138.
  48. "On the rate of approximation by generalized polynomials with restricted coefficients", Approx. Theory III, Proc. Conference on Approx. Theory, Austin, Texas 1980. E.W. Cheney, ed., Academic Press (1980), 583-588.
  49. "On the rate of approximation by Muntz polynomials satisfying constraints", Proc. Conference on Operator Theory and Approx., Oberwolfach 1980, ISNM 60 (1981), 365-370.
  50. "The rate of monotone spline approximation in the norm" (with H. N. Mhaskar), SIAM J. Math. Anal. 13 (1982), 866-874.
  51. "The behaviour of the derivatives of the algebraic polynomials of best approximation," J. Approx. Theory 35 (1982), 169-176.
  52. "Comonotone approximation by splines of piecewise monotone functions" (with H. N. Mhaskar), J. Approx. Theory 35 (1982), 364-369.
  53. "On comonotone approximation" (with R. K. Beatson), Canadian Math. Bull. 26 (1983), 220-224.
  54. "The degree of comonotone approximation of differentiable functions", Proc. 2nd Edmonton Conference on Approximation Theory 1982, Canadian Math. Soc. Conf. Proc. 3 (1983), 239-249.
  55. "The degree of copositive approximation by polynomials", Proc. Amer. Math. Soc. 88 (1983), 101-105.
  56. "Degree of copositive approximation", Approx. Theory IV, Proc. International Symposium on Approx. Theory, College Station, Texas 1983, C.K. Chui, L.L. Schumaker and J.C. Ward, eds., Academic Press (1983), 587-592.
  57. "Pointwise estimates for convex polynomial approximation", Proc. Amer. Math. Soc. 98 (1986), 471-474.
  58. "New estimates on the rate of shape preserving approximation", Approx. Theory V (1986), 423-426.
  59. "Monotone and comonotone polynomial approximation revisited", J. Approx. Theory 53 (1988), 1-16.
  60. "Monotone polynomial approximation in L_p", Rocky Mountain Math J. 19 (1989), 231-241.
  61. "On approximation in the L_p-norm by reciprocals of polynomials" (with A. L. Levin and E. B. Saff), J. Approx. Theory 75 (1989), 322-331.
  62. "Polynomials with restricted coefficients", Approximation Theory VI (1989), 387-390.
  63. "Approximation in the L_p-norm by reciprocals of trigonometric and algebraic polynomials" (with R. A. DeVore and X. M. Yu), Canadian J. Math. 33 (1990), 460-469.
  64. "Improved estimates in Müntz-Jackson theorems", Progress in Approx. Theory (1991), 575-582.
  65. "Degree of approximation by polynomials with restricted coefficients", Progress in Approx. Theory (1991), 567-573.
  66. "Shape preserving approximation by polynomials in " (with X. M. Yu), preprint.
  67. "Professor Amnon Jakimovski- on his sixty fifth birthday" (with S. Baron), Approximation Interpolation and Summability, S. Baron and D. Leviatan eds, Israel Mathematical Conference Proceedings 4 (1991), 1-24.
  68. "Polynomial approximation in L_p[0,1], 0<p<1" (with R. A. DeVore and X. M. Yu), Constructive Approx. 8 (1992), 187-201.
  69. "Shape preserving polynomial approximation in C[0,1]" (with Z. Ditzian and D. Jiang), Proc. Cambridge Phil. Soc. 112 (1992), 309-316.
  70. "Copositive polynomial approximation in C[0,1]'' (with Y. K. Hu and X. M. Yu), J. of Analysis 1 (1993), 85-90.
  71. "Convex polynomial approximation in L_p[0,1], 0<p<1 " (with R. A. DeVore), J. Approx. Theory 75 (1993), 79-84.
  72. "Simultaneous polynomial approximation'' (with Z. Ditzian and D. Jiang), SIAM J. Math. Anal. 24 (1993), 1652-1661.
  73. "Compression and nonlinear n-widths'' (with R. A. DeVore, G. Kyriazis and V. M. Tikhomirov), J. Advances in Computational Mathematics 1 (1993), 197-214.
  74. "Inverse theorems for best polynomial approximation in C[0,1]'' (with Z. Ditzian and D. Jiang), Proc. Amer. Math. Soc. 120 (1994), 151-155.
  75. "Convex polynomial and spline approximation in C[-1,1]" (with Y. K. Hu and X. M. Yu), Constructive Approx. 10 (1994), 31-64.
  76. "Degree of approximation by rational functions with prescribed numerator degree'' (with D. S. Lubinsky), Canadian Math. J. 46 (1994), 619-633.
  77. "Copositive polynomial and spline approximation'' (with Y. K. Hu and X. M. Yu), J. Approx. Theory 80 (1995), 204-218.
  78. "Shape preserving approximation in L_p" (with V. Operstein) Constr. Approx. 11 (1995), 299-319.
  79. "Rational Müntz approximation" (with M. v. Golitschek) Annals of Numer. Math. 2 (1995), 425-438.
  80. "Counter examples in convex and higher order constrained approximation" (with I. A. Shevchuk) East J. on Approx. 1 (1995), 391-398.
  81. "Recent developments in shape preserving approximation" in Approximation Theory, Proc. IDoMAT 1995, M. W. Müller, M. Felten and D. H. Mache eds, Akademie Verlag, Math. Research 86(1995), 189-200.
  82. "Convex polynomial and spline approximato in L_p[0,1], 0<p<infinity " (with R. A. DeVore and Y. K. Hu) Constr. Approx. 12 (1996), 409-422.
  83. "Some estimates for convex polynomial approximation in L_p" (with Y. K. Hu and X. M. Yu) J. Orissa Math. Soc. 12-15 (1993-96), 49-57.
  84. "G. G. Lorentz and the theory of summability" (with S. Baron) in G. G. Lorentz: Mathematics from Leningrad to Austin, Selected works in real, functional, and numerical analysis Vol. 1, Birkha\"user Boston (1997), 41-57.
  85. "Shape preserving approximation by polynomials and splines" Proc. International Meeting on Approximation Theory and Function Series, Budapest 1995. Budapest (1996), 63-84.
  86. "On monotone and convex approximation by splines with free knots" (with A. Shadrin) Annals of Numer. Math. 4 (1997), 415-434.
  87. "Some positive results and counter examples in comonotone approximation " (with I. A. Shevchuk) J. Approx. Theory 89 (1997), 195-206.
  88. "Comonotone polynomial approximation in L_p[-1,1], 0<p<infinity" (with K. Kopotun) Acta Math. Hugarica 77 (1997), 301-310.
  89. "Approximation of monotone functions: a counter example" (with R. A. DeVore and I. A. Shevchuk), in Curves and Surfaces with Applications in CAGD, A. Le Méhauté, C. Rabut and L. L. Schumaker, Eds, Vanderbilt Univ. Press (1997), 95-102.
  90. "Nearly comonotone approximation" (with I. A. Shevchuk), J. Approx. Theory 95 (1998), 53-81.
  91. "Degree of simultaneous coconvex polynomial approximation" (with K. Kopotun), Results in Math. 34 (1998), 150-155.
  92. "Monotone approximation estimates involving the third modulus of smoothness "(with I. A. Shevchuk), Approx. Theory IX, Ch. K. Chui and L. L. Schumaker eds., Vanderbilt University Press, Nashville TN, (1998), 223-230.
  93. "The degree of coconvex polynomial approximation" (with K. Kopotun and I. A. Shevchuk), Proc. Amer. Math. Soc. 127 (1999), 409-415.
  94. "The Bernstein operator is the closest positive operator to a projection " (with B. L. Chalmers and M. P. Prophet), Approx. Theory IX, Ch. K. Chui and L. L. Schumaker eds., Vanderbilt University Press, Nashville TN, (1998), 75-82.
  95. "Optimal interpolating spaces preserving shape" (with B. L. Chalmers and M. P. Prophet), J. Approx. Theory 98 (1999), 354-373.
  96. "Constants in comonotone polynomial approximation- a survey " (with I. A. Shevchuk), Proc. IDoMAT 1998, M. W. M\"uller, M. Felten and D. H. Mache Eds, (1999), 137-150.
  97. "Some positive results and counter examples in comonotone approximation II " (with I. A. Shevchuk), J. Approx. Theory 100 (1999), 113-143.
  98. "More on comonotone polynomial approximation " (with I. A. Shevchuk), Constr. Approx. 16 (2000), 475-486.
  99. "Interpolatory pointwise estimates for polynomial approximation " (with H. H. Gonska, I. A. Shevchuk and H.-J. Wenz), Constr. Approx. 16 (2000), 603-629.
  100. "Nearly comonotone approximation II " (with I. A. Shevchuk), Acta Math. (Szeged) 66 (2000), 115-135.
  101. "Shape preserving approximation by polynomials", J. Comp. and Applied Math. 121 (2000), 73-94.
  102. "Estimates on the approximation of 3-monotone functions by 3-monotone polynomials" (with V. N. Konovalov), East J. Approx. 7 (2001), 333-349.
  103. "Kolmogorov and linear widths of weighted Sobolev classes on a finite interval II" (with V. N. Konovalov), J. Approx. Theory 113 (2001), 266-297.
  104. "Wavelet decomposition of non-refinable shift invariant spaces" (with S. Dekel), Appl. and Comp. Harmonic Analysis 12 (2002), 230-258.
  105. "Coconvex approximation" (with I. A. Shevchuk), J. Approx. Theory 118 (2002), 20-65.
  106. "Kolmogorov and linear widths of weighted Sobolev classes on a finite interval" (with V. N. Konovalov), Analysis Math. 28 (2002), 251-278.
  107. "Nonstationary wavelets" (with Shai Dekel) in Wavelet Analysis, Twenty years' development, Series in Analysis Vol. 1, Proceedings ICCHA, Hong Kong, June 2001, Ed. D. X. Zhou, World Scientific (2002), pp. 81-99.
  108. "Nearly coconvex approximation" (with I. A. Shevchuk), Serdica Math. J. 28 (2002), 361-378.
  109. "Shape preserving widths of weighted Sobolev-type classes of positive, monotone, and convex functions on a finite interval" (with V. N. Konovalov), Constr. Approx. 19 (2003), 23-58.
  110. "Shape preserving widths of weighted Sobolev-type classes of s-monotone functions on a finite interval" (with V. N. Konovalov), Israel J. Math. 133 (2003), 239-268.
  111. "Shape preserving widths of weighted Sobolev-type classes" (with V. N. Konovalov), Proc. IDoMAT 2001 M. Buhmann and D. H. Mache Eds, International Series of Numer. Math. 142 Birkh\"auser Verlag Basel (2003), 79-94.
  112. "Coconvex polynomial approximation" (with I. A. Shevchuk), J. Approx. Theory 121 (2003), 100-118.
  113. "On the relation between piecewise polynomial and rational approximation in L_p(R^2)" (with Shai Dekel), Constr. Approx. 20 (2003), 73-91.
  114. "Adaptive multivariate piecewise polynomial approximation" (with Shai Dekel), SPIE 5207 in Wavelets: Appl. in Signal and Image Processing X, M. A. Unser, A. Aldroubi, and F. Laine Eds (2003), 125-133.
  115. "On measuring the efficiency of kernel operators in L_p(R^d)" (with Shai Dekel), Advances in Comp. Math. 20 (2004), 53-65.
  116. "Free knot splines approximation of s-monotone functions" (with V. N. Konovalov), Advances in Comput. Math. 20 (2004), 347-366.
  117. "On bivariate smoothness spaces associated with nonlinear approximation" (with Shai Dekel and Micha Sharir), Constr. Approx. 20 (2004), 625-646.
  118. "The Bramble-Hilbert lemma for convex domains" (with S. Dekel), SIAM J. Math. Anal. 35 (2004), 1203-1212.
  119. "Whitney estimates for convex domains with applications to multivariate piecewise polynomial approximation" (with Shai Dekel), Foundations of Comp. Math. 4 (2004), 345-368.
  120. "Widths of Sobolev-type classes with quasi-seminorms" (with Z. Ditzian and V. N. Konovalov), Rocky Mountain Math. J. 35 (2005), 445-478.
  121. "On 3-monotone approximation by piecewise polynomials" (with A. V. Prymak), J. Approx. Theory 133 2005, 147-172.
  122. "Convex approximation in the uniform norm: conclusion" (with K. Kopotun and I. A. Shevchuk), Canadian Math. J. 57 (2005), 1224-1248.
  123. "Adaptive multivariate approximation using binary space partitions and geometric wavelets" (with Shai Dekel), SIAM J. Numer. Analysis 43 (2005), 707-732.
  124. "Simultaneous greedy approximation in Banach spaces" (with V. N. Temlyakov), J. of Complexity 21 (2005), 275-293.
  125. "Simultaneous approximation by greedy algorithms" (with V. N. Temlyakov), Advances in Comp. Math. 25 (2006), 73-90.
  126. "Coconvex approximation in the uniform norm- the final frontier" (with K. Kopotun and I. A. Shevchuk), Acta Math. Hungar. 110 (2006), 117-151.
  127. "Nearly monotone and nearly convex approximation in L_p" (with K. Kopotun and A. V. Prymak), Proc. Amer. Math. Soc. 134 (2006), 2037-2047.
  128. "Kolmogorov and linear widths of Sobolev-type classes of s-monotone functions" (with J. Gilewicz and V. N. Konovalov), J. Approx. Theory 140 (2006), 101-126.
  129. "Freeknot splines approximation of Sobolev-type classes of s-monotone functions (with V. N. Konovalov), Advances in Comp. Math. 27 (2007), 211-236.
  130. "Constrained spline smoothing" (with K. A. Kopotun and A. V. Prymak), SIAM J. Numer. Anal. 46 (2008), 1985-1997.
  131. "Approximation by polynomials and ridge functions of classes of s-monotone radial functions" (with V. N. Konovalov and V. E. Maiorov), J. Approx. Theory 152 (2008), 20-51.
  132. "Are the degrees of best (co)convex and unconstrained polynomial approximation the same?" (with K. Kopotun and I. A. Shevchuk), Acta Math. Hungar. 123 (2009), 273-290.
  133. "Approximation of Sobolev classes by polynomials and ridge functions" (with V. N. Konovalov and V. E. Maiorov), J. Approx. Theory 159 (2009), 97-108.
  134. "Nearly monotone and nearly convex approximation by smooth spline in L_p, p>0", (with K. Kopotun and A. V. Prymak), J. Approx. Theory 160 (2009), 103-112.
  135. "Nikolskii-type estimates for coconvex approximation of functions with one inflection point", (with G. Dzyubenko and I. A. Shevchuk), Jaen J. Approx. 2 (2010), 51-64.
  136. "Are the degrees of best (co)convex and unconstrained polynomial approximation the same? II", (with K. Kopotun and I. A. Shevchuk), Ukrainian J. Math. 62 (2010), 369-386.
  137. "Coconvex pointwise approximation", (with G. Dzyubenko and I. A. Shevchuk), Rendiconti del circolo matematico di Palermo 82 (2010), 359-374.
  138. "Positive results and counterexamples in comonotone approximation" (with D. V. Radchenko and I. A. Shevchuk), Constr. Approx. (submitted).
  139. "Uniform and pointwise shape preserving approximation by algebraic polynomials" (with K. A. Kopotun, A. Prymak and I. A. Shevchuk), Surveys in Approximation Theory 6 (2011), 24-74. (see http://www.math.technion.ac.il/sat/papers/16/)
  140. "The Degree of Shape Preserving Weighted Polynomial Approximation" (with Doron Lubinsky), J. Approx. Theory 164 (2012), 218-228.
  141. "Pointwise estimates for 3-monotone approximation" (with Andriy Bondarenko and Andriy Prymak), J. Approx. Theory 164 (2012), 1205-1232.
  142. "Positive results and counterexamples in comonotone approximation" (with D. V. Radchenko and I. A. Shevchuk), Constr. Approx. 36 (2012), 243-266.
  143. "65 years since the paper `On the value of the best approximation of functions having a real singular point' by I. I. Ibragimov" (with I. A. Shevchuk), Azerbaijan J. Math. 2 (2012), 94-104.
  144. "On the stability and accuracy of least squares approximations" (with Albert Cohen and Mark A. Davenport), J. FoCM 13 (2013), 819-834.
  145. "Positive results and counterexamples in comonotone approximation II" (with O. V. Vlasiuk and I. A. Shevchuk), J. Approx. Theory 179 (2014), 1-23.
  146. "New moduli of smoothness" (with K. A. Kopotun and I. A. Shevchuk), Publ. de l'Inst. Math., Serbian Academy of Sciences and Arts of Belgrade 96(110) (2014), 169-180.
  147. "Pointwise estimates of coconvex approximation" (with G. Dzyubenko and I. A. Shevchuk), Ja\'en J. Approx. 6 (2014), 261-295.
  148. "New moduli of smoothness: weighted DT moduli revisited and applied" (with K. Kopotun and I. A. Shevchuk), Constr. Approx. 42 (2015), 129-159.
  149. "Monotonoe trigonometric approximation" (with Jean Sidon), Med. J. Math. 12 (2015), 877-887.
  150. "Constrained approximation with Jacobi weights" (with K. A. Kopotun and I. A. Shevchuk), Can. Math. J. 68 (2016), 109-128.
  151. "Jackson type estimates for piecewise $q$-monotone approximation, $q\ge 3$, are not valid" (with I. A.Shevchuk), Pure and Applied Functional Analysis 1 (2016), 85-96.
  152. "Yet another look at positive linear approximation operators, $q$-monotonicity and applications" (with K. Kopotun, A. Prymak and I. A. Shevchuk), J. Approx. Theory 210 (2016), 1-22.
  153. "Comparing the degrees of unconstrained and shape preserving approximation by polynomials" (with I. A. Shevchuk), J. Approx. Theory 211 (2016), 16-28.
  154. "Interpolatory estimates in monotone piecewise polynomial approximation" (with I. L. Petrova) J. Approx. Theory 223 (2017), 1-8. "Corrigendum" J. Approx. Theory 228 (2018), 79-80. Reprinted J. Approx. Theory 238 (2019), 103-110.
  155. "On moduli of smoothness with Jacobi weights" (with K. Kopotun and I. A. Shevchuk) Ukrainian Math. Zh. 70 (2018), 379-403.
  156. \item ``Interpolatory pointwise estimates for monotone polynomial approximation" (with K. Kopotun and I. A. Shevchuk) J. Math. Anal. Appl. 459 (2018), 1260-1295.
  157. \item ``On weighted approximation with Jacobi weights" (with K. Kopotun and I. A. Shevchuk) J. Approx. Theory 237 (2018), 96-112.
  158. \item ``A note on Hermite interpolation" (with A. Jakimovski) Ja\'en J. Approx. 10 (2018), 147-153.
  159. \item ``On some properties of moduli of smoothness with Jacobi weights" (with K. Kopotun and I. A. Shevchuk) Topics in Classical and Modern Analysis: In Memory of Yingkang Hu (Applied and Numerical Harmonic Analysis) (2019), 19-31.
  160. \item ``On one estimate of divided differences and its applications" (with K. Kopotun and I. A. Shevchuk) Ukrainian Math. Zh. f71 (2019), 230-245.
  161. \item ``Interpolatory estimates in convex piecewise-polynomial approximation" (with K. Kopotun and I. A. Shevchuk) J. Math. Anal. Appl. 474 (2019), 467-479.
  162. \item ``Uniform and pointwise shape preserving approximation (SPA) by algebraic polynomials: an update" (with K. Kopotun and I. A. Shevchuk) SMAI J. Comput. Math. S5 (2019), 99-108.
  163. \item ``Interpolatory pointwise estimates for convex polynomial approximation" (with K. Kopotun, I. L. Petrova and I. A. Shevchuk) Acta Math. Hungar. (accepted).
  164. \item ``No Jackson-type estimates for piecewise $q$-monotone, $q\ge3$, trigonometric approximation" (with O. V. Motorna and I. A. Shevchuk) (submitted).
  165. \item ``Exact pointwise estimates for polynomial approximation with Hermite interpolation" (with K. Kopotun and I. A. Shevchuk) (submitted).
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Dany Leviatan
Mon Feb. 8 11:03:43 GMT+0300 1998