The Existence and Local Behavior of the Bivariate Quadratic Function Approximation  

作　　者：ZHENG Cheng-de 

机构地区：[1]Department of Mathematical and Physics, Dalian Jiaotong University, Dalian 116028, China

出　　处：《Chinese Quarterly Journal of Mathematics》2006年第1期110-114,共5页数学季刊（英文版）

基　　金：Supported by the NNSF of China(10271022, 60373093);Supported by the Science and Technology Development Foundation of Education Department of Liaoning Province(2004C060)

摘　　要：This paper analysis the local behavior of the bivariate quadratic function approximation to a bivariate function which has a given power series expansion about the origin. It is shown that the bivariate quadratic Hermite-Padé form always defines a bivariate quadratic function and that this function is analytic in a neighborhood of the origin.

关 键 词：Hermite-Padé approximation bivariate function approximation bivariate analytic function 

分 类 号：O174.41[理学—数学]