Norm and Essential Norm of Composition Followed by Differentiation from Logarithmic Bloch Spaces to H μ ∞

الملخص EN

In this note we express the norm of composition followed by differentiation D C φ from the logarithmic Bloch and the little logarithmic Bloch spaces to the weighted space H μ ∞ on the unit disk and give an upper and a lower bound for the essential norm of this operator from the logarithmic Bloch space to H μ ∞ .