On Stević-Sharma operator from q k (p, q) space to Zygmund-type space


Zhitao Guo




The aim of this paper is to investigate the boundedness and compactness of Stević-Sharma operator T ψ 1 ,ψ 2 ,φ from Q K (p, q) and Q K,0 (p, q) spaces to Zygmund-type space and little Zygmund-type space. We also give the upper and lower estimations for the norm of T ψ 1 ,ψ 2 ,φ .