半平面中有限阶解析函数的因子分解  

Factorization of Analytic Function of Finite Order in a Half-Plane

作　　者：邓冠铁[1] 

机构地区：[1]北京师范大学数学科学学院,北京100875

出　　处：《数学学报（中文版）》2007年第1期215-220,共6页Acta Mathematica Sinica：Chinese Series

基　　金：国家自然科学基金资助项目(10371011);教育部留学回国人员科研启动基金资助项目

摘　　要：与经典有限阶整函数的Hadamard因子分解定理和半平面中属于Hardy空间的解析函数的内外函数的因子分解类似,对右半平面中有限阶ρ解析函数f,可以分解为三个解析函数G,eQ和eg的乘积GeQeg,其中G是一个加权Blaschke乘积,Q是一个次数不超过ρ的多项式以及eg是一个加权外函数,log|G|,ReQ和Reg-log|f|在右半平面的边界恒为零．Analogous to the classic Hadamard factorization theorem about an entire function of finite order and the inner and outer factorization theorem about analytic function of the Hardy space in a half-plane, we obtain that an analytic function f of finite order p in a right half-plane can be factorized into the product GeQeg of the three analytic functions, G, eQ and eg, where G is a weighted Blaschke product, Q is a polynomial of degree not greater than p and e^g is a weighted outer function such that the functions log ｜G｜, ReQ and Reglog ｜f｜ are identically zero in the boundary of the right half-plane.

关 键 词：因子分解 Blaschke乘积 积分表示 

分 类 号：O174.5[理学—数学] O174.52[理学—基础数学]