EXISTENCE AND LOCAL BEHAVIOR OF NONDIAGONAL BIVARIATE QUADRATIC FUNCTION APPROXIMATION

• 作 者: ZhengChengde WangRenhong
• 机 构: Dept.ofMath.,InstituteofMath.Sci.
• 出 处: 高校应用数学学报：英文版
• 发表日期: 2003年4期
• 关键词: 存在性 函数逼近 双变量二次函数 Taylor多项式逼近 Hermite-Padé approximation bivariate function
• 基金项目: Supported by National Natural Science Foundation of China( 699730 1 0,1 0 2 71 0 2 2 )

This paper analyses the local behavior of the simple off-diagonal bivariate quadratic function approximation to a bivariate function which has a given power series expansion about the origin.It is shown that the simple off-diagonal bivariate quadratic Her