A SUFFICIENT CONDITION FOR MEAN CONVERGENCE OF ORTHOGONAL SERIES FOR FREUD WEIGHTS  

作　　者：D. W. Lee (Kyungpook National University, Korea) 

出　　处：《Analysis in Theory and Applications》2000年第4期55-67,共13页分析理论与应用（英文刊）

基　　金：KOSEF (1999-- 2-- 103-- 002~ 3 ).

摘　　要：Let Sn[f](x) be the n-th partial sum of the orthonormal polynomial series expansion for f corresponding to a Freud weight W(x)=e?Q(x). We give a sufficient condition for the inequalityLet Sn[f](x) be the n-th partial sum of the orthonormal polynomial series expansion for f corresponding to a Freud weight W(x)=e?Q(x). We give a sufficient condition for the inequality

关 键 词：oscillatory integral operator MULTIPLIER SINGULARITY 

分 类 号：O174.41[理学—数学]