Essential Norms of Volterra Type Operators between Zygmund Type Spaces

Volterra-Type Operators on Zygmund Spaces

Estimates of Essential Norms of Weighted Composition Operator from Bloch Type Spaces to Zygmund Type Spaces

Let u be a holomorphic function and φ a holomorphic self-map of the open unit disk D in the complex plane. We give some new characterizations for the boundedness of the weighted composition operators uCφ from Bloch type spaces to Zygmund type spaces in D in terms of u,φ, their derivatives and the n-th power φ of φ. Moreover, we obtain some similar estimates for their essential norms. From which...

Generalized Composition Operators from Zygmund Type Spaces to Qk Spaces

Let φ be an analytic self-map of D and g∈H(D) . The boundedness and compactness of generalized composition operators

Essential norm of generalized composition operators from weighted Dirichlet or Bloch type spaces to Q_K type spaces

In this paper we obtain lower and upper estimates for the essential norms of generalized composition operators from weighted Dirichlet spaces or Bloch type spaces to $Q_K$ type spaces.

the investigation of the relationship between type a and type b personalities and quality of translation

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