四川大学学报(自然科学版)
四川大學學報(自然科學版)
사천대학학보(자연과학판)
JOURNAL OF SICHUAN UNIVERSITY
2000年
3期
320-324
,共5页
小Hankel算子%正交投影算子%对偶关系%勒贝格测度
小Hankel算子%正交投影算子%對偶關繫%勒貝格測度
소Hankel산자%정교투영산자%대우관계%륵패격측도
little Hankel operator%orthogonal project operator%dual relationship%Lebesgue measure
给出了PolvdiakD2=D×D上小-Hankel算子Hψ:H2(T2)→ 范数估计,即‖Hψ‖=dis(ψ,H∞ L∞(T)+L∞ H∞(T)),再结合对偶关系得出了H10(T2)的分解,即 f∈H10(T2),存在{Fi}∞1,{Gi}∞1∈H2(T2)使得f=∑FiGi且该函数级数按H3范数收敛于f.
給齣瞭PolvdiakD2=D×D上小-Hankel算子Hψ:H2(T2)→ 範數估計,即‖Hψ‖=dis(ψ,H∞ L∞(T)+L∞ H∞(T)),再結閤對偶關繫得齣瞭H10(T2)的分解,即 f∈H10(T2),存在{Fi}∞1,{Gi}∞1∈H2(T2)使得f=∑FiGi且該函數級數按H3範數收斂于f.
급출료PolvdiakD2=D×D상소-Hankel산자Hψ:H2(T2)→ 범수고계,즉‖Hψ‖=dis(ψ,H∞ L∞(T)+L∞ H∞(T)),재결합대우관계득출료H10(T2)적분해,즉 f∈H10(T2),존재{Fi}∞1,{Gi}∞1∈H2(T2)사득f=∑FiGi차해함수급수안H3범수수렴우f.
The author obtained the norm of little Hankel operator on Polydisk D2 = D × D , that is: [[ Hψ [dis (ψ,H∞ L∞(T)+L∞ H∞(T)) . Combining with the classical dual relationship, the author also obtained the decomposition of functions in H10(T2),that is: f ∈H10(T2),there exist functional sequences {Fi}∞1, {Gi}∞1∈ H2(T2) . St f = ∑∞FiGi. This series of functions converge to f1 in H1(T2) norm.