期刊名称:International Journal of Mathematics and Mathematical Sciences
印刷版ISSN:0161-1712
电子版ISSN:1687-0425
出版年度:2000
卷号:23
DOI:10.1155/S0161171200002489
出版社:Hindawi Publishing Corporation
摘要:We obtain the degree of approximation of functions belonging to
class Lip(ψ(u,v);p),   p>1 using the Gauss Weierstrass integral of the double Fourier series of f(x,y).