Abstract:
Known approximation theorems of Weierstrass and Lavrent'ev are extended by determining allowable bounds on the values of the coefficients of the approximating polynomials.
Citation:
S. Ya. Khavinson, “Permissible values of coefficients of polynomials in uniform approximation of continuous functions”, Mat. Zametki, 6:5 (1969), 619–625; Math. Notes, 6:5 (1969), 834–838
M. A. Petrosova, I. V. Tikhonov, V. B. Sherstyukov, “On growth rate of coefficients in Bernstein polynomials for the standard modulus function on a symmetric interval”, Ufa Math. J., 10:3 (2018), 59–76
I. F. Krasichkov-Ternovskii, G. N. Shilova, “Absolute completeness of systems of exponentials on convex compact sets”, Sb. Math., 196:12 (2005), 1801–1814
A. G. Vitushkin, A. A. Gonchar, M. V. Samokhin, V. M. Tikhomirov, P. L. Ul'yanov, V. P. Havin, V. Ya. Èiderman, “Semën Yakovlevich Khavinson (obituary)”, Russian Math. Surveys, 59:4 (2004), 777–785
I. F. Krasichkov-Ternovskii, “On absolute completeness of systems of exponentials on a closed interval”, Math. USSR-Sb., 59:2 (1988), 303–315
V. H. Martirosian, “On uniform complex approximation by lacunary polynomials”, Math. USSR-Sb., 48:2 (1984), 445–462
V. V. Napalkov, “Approximation of functions of several variables, taking account of the growth of the coefficients of the approximating combinations”, Math. USSR-Sb., 39:1 (1981), 133–143