Daniel Li
Lohia Machinery Limited
74 Papers
519 Citations
Daniel Li is an academic researcher from Lohia Machinery Limited. The author has contributed to research in topics: Composition operator & Hardy space. The author has an hindex of 17, co-authored 69 publications. Previous affiliations of Daniel Li include Centre national de la recherche scientifique & Artois University.
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Papers
Full length article: On approximation numbers of composition operators
TL;DR: It is shown that the approximation numbers of a compact composition operator on the Hardy space H^2 or on the weighted Bergman spaces B"@a of the unit disk can tend to 0 arbitrarily slowly, but that they never tend quickly to 0.
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Some examples of compact composition operators on H2
TL;DR: In this article, the authors construct, in an essentially explicit way, various composition operators on H 2 and study their compactness or their membership in the Schatten classes and show that they are all in no Schatten class but have the same modulus on the boundary of D as symbols whose associated composition operators are in S p for every p > 2.
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Some new properties of composition operators associated with lens maps
TL;DR: In this paper, a negative answer to the question of whether all composition operators which are weakly compact on a non-reflexive space are norm-compact is given.
Estimates for approximation numbers of some classes of composition operators on the hardy space
TL;DR: In this paper, the authors give estimates for the approximation numbers of composition operators on H 2, in terms of some modulus of continuity, for symbols whose image is contained in a polygon.
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•Posted Content
Some examples of compact composition operators on $H^2$
TL;DR: In this paper, the authors construct, in an essentially explicit way, various composition operators on H 2 and study their compactness or their membership in the Schatten classes and show that they are all in no Schatten class but have the same modulus on the boundary of D as symbols whose associated composition operators are in S p for every p > 2.
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