[1] 陈英伟, 王志军, 刘玉军, CHEN Yingwei, WANG Zhijun, LIU Yujun. Hardy型(A)μ空间中的Jackson定理 [J]. 河北师范大学学报(自然科学版) 2013. [2] DEVORE R A, LORENTZ G G. Constructive approximation [M]. Berlin:Springer-Verlag 1993. [3] ANDERSSON J M, HINKKANEN A, LESLEY F D. On theorems of Jackson and Bernstein type in the complex plane [J]. Constr Approx 1988, 4. [4] CHEN YingWei, REN GuangBin. Jackson's theorem in Qp spaces [J]. 2010.doi:10.1007/s11425-009-0097-4 [5] ANDRIEVSII V. Harmonic version of Jackson's theorem in the complex plane [J]. J Approx Theory 1997, 90. [6] KRYAKIN Y, TREBELS W. q-moduli of continuity in Hp(D), p》0, and an inequality of Hardy and Littlewood [J]. J Approx Theory 2002, 115. [7] KOSTOVA V A. On a generalization of Jackson's theorem in Rm [J]. Math Balkanica:N S 1998, 12. [8] REN Guangbin, CHEN Yingwei. Gradient estimates and Jackson's theorem in Qμ spaces related to measures [J]. J Approx Theory 2008, 155. [9] ZYGMUND A. Trigonometric series [M]. Cambridge:Cambridge Univ Press 1959. [10] Ren GB, Wang MZ. Holomorphic Jackson's theorems in polydiscs [J]. Journal of Approximation Theory 2005, 2(2). [11] RUDIN W. Function theory in polydiscs [M]. New York:Benjamin 1969. [12] CHEN Yingwei, WANG Zhijun, DONG Wenlei. Jackson's theorem in Hardy-Sobolev type space in the unit polydiscs [J]. ICICA2012 CCIS 2012, 307. [13] SEWELL W E. Degree of approximation by polynomials in the complex domain [M]. Princeton:Prinston Univ.Press 1942. [14] GARNETT J B. Bounded analytic functions [M]. New York:Springer 2007. [15] STORO(Z)ENKO (E) A. Approximation of functions of class Hp, 0《p≤1 [J]. Math USSR-Sb 1978, 34. |