39 citations · 62 across the 20 of their papers we have counts for
24 papers
Compactification and decompactification by weights on Bergman spaces
Pascal Lefèvre, Daniel Li, Hervé Queffélec +1
We characterize the symbols for which there exists a weight w such that the weighted composition operator M w C is compact on the weighted Bergman space B 2 . We also ch…
Boundedness of composition operators on general weighted Hardy spaces of analytic functions
Pascal Lefèvre, Daniel Li, Hervé Queffélec +1
We characterize the (essentially) decreasing sequences of positive numbers = ( n) for which all composition operators on H 2 () are bounded, where H 2 () is the space…
Comparison of singular numbers of composition operators on different Hilbert spaces of analytic functions
Hervé Queffélec, Pascal Lefèvre, Daniel Li +1
We compare the rate of decay of singular numbers of a given composition operator acting on various Hilbert spaces of analytic functions on the unit disk $\D$. We show that for the…
Compactification, and beyond, of composition operators on Hardy spaces by weights
Pascal Lefèvre, Daniel Li, Hervé Queffélec +1
We study when multiplication by a weight can turn a non-compact composition operator on H 2 into a compact operator, and when it can be in Schatten classes. The q-summing case in H…
-Müntz spaces as model spaces
Emmanuel Fricain, Pascal Lefevre
We emphasize a bridge between two areas of function theory: hilbertian Müntz spaces and model spaces of the Hardy space of the right half plane. We give miscellaneous applications…
Lacunary Müntz spaces: isomorphisms and Carleson embeddings
Loic Gaillard, Pascal Lefèvre
In this paper we prove that is almost isometric to in the canonical way when is lacunary with a large ratio. On the other hand, our approach can be used to stu…