THE BOUNDEDNESS OF COMMUTATOR ASSOCIATED TO WEIGHTED HARDY-LITTLEWOOD AVERAGE OPERATOR IN HERZ-TYPE SPACE
Canqin Tang
Abstract
Canqin Tang
Abstract
The boundedness of commutator Uψb generated by the Weighted Hardy-Littlewood average operator U and BMO function b in Herz and Morrey-Herz type spaces are discussed.It is showed that the sufficient condition for its boundedness in the Morrey-Herz type spaces is ∫10t-(α+n/q2-1)ψ(t)log2tdt∞.It turned to be ∫10t-n/pψ(t)log2tdt∞ as α=0,1=0 and q1=q2=p1,and then Uψb is bounded on Lp(Rn).
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The boundedness of commutator Uψb generated by the Weighted Hardy-Littlewood average operator U and BMO function b in Herz and Morrey-Herz type spaces are discussed.It is showed that the sufficient condition for its boundedness in the Morrey-Herz type spaces is ∫10t-(α+n/q2-1)ψ(t)log2tdt∞.It turned to be ∫10t-n/pψ(t)log2tdt∞ as α=0,1=0 and q1=q2=p1,and then Uψb is bounded on Lp(Rn).
Key concepts: Commutator, Mathematics, Hardy space, Bounded mean oscillation, Type (biology), Bounded function, Operator (biology), Pure mathematics