Li He

activity

20172026

most citedSpectral theory of multiplication operators on Hardy-Sobolev spaces

5 citations · 5 across the 9 of their papers we have counts for

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Showing 2026 · math.FAShow all

2 papers · 2 filters

math.FA2026

Compactness of Toeplitz Operators on the Bergman Space

Guangfu Cao, Li He, Shuqing Zhang

Let $φ\in L^\infty(\D)$. We study compactness criteria for $T_φ$ on the Bergman space $A^2(\D)$. Axler and Zheng~\cite{AZ1998} established a necessary and sufficient condition fo…

math.FA2026

Closed Range and Essential Norms of Composition Operators on Weighted Dirichlet Spaces

Caixing Gu, Li He, Xiaofeng Wang +1

We study closed range and essential norms of bounded composition operators $C_{φ}$ on weighted Dirichlet spaces $D_{α}$ . For $- 1 < α < 0$ , we first consider maps whose images are…