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math.FA2018
Entropy numbers and spectral radius type formula for composition operators on the polydisk
Daniel Li, Hervé Queffélec, Luis Rodríguez-Piazza
We give estimates of the entropy numbers of composition operators on the Hardy space of the disk and of the polydisk.
math.FA2018★ 2 cited
Composition operators with surjective symbol and small approximation numbers
Daniel Li, Hervé Queffélec, Luis Rodríguez-Piazza
We give a new proof of the existence of a surjective symbol whose associated composition operator on H 2 (D) is in all Schatten classes, with the improvement that its approximation…
math.FA2018
Pluricapacity and approximation numbers of composition operators
Daniel Li, Hervé Queffélec, Luis Rodríguez-Piazza +1
For suitable bounded hyperconvex sets in , in particular the ball or the polydisk, we give estimates for the approximation numbers of composition operators $C_ϕ\c…