Let u ∈ H(D) and φ be an analytic self-map of D. We estimate the essential norms of weighted composition operators uCφ acting on Zygmund type spaces in terms of u, φ, their derivatives and the n-th power φn of φ. Moreover, we give similar characterizations for boundedness of uCφ between Zygmund type spaces.
- Essential norms
- Weighted composition operators
- Zygmund type spaces