96 citations · 106 across the 35 of their papers we have counts for
6 papers · 1 filter
Fractional integration with singularity on Light-cone,I: natural setting
Zipeng Wang
In this first part of our project, we prove a classical Hardy-Littlewood-Sobolev result for a new family of fractional integral operators whose kernel has singularity appeared on t…
Fractional integration with singularity on Light-cone, II
Zipeng Wang
In this paper, we study a family of fractional integral operators whose kernel carrying a critical index has singularity on the light-cone in R^n+1.
On a class of random sets of positive integers
Yong Han, Yanqi Qiu, Zipeng Wang
In this note, we study a class of random subsets of positive integers induced by Bernoulli random variables. We obtain sufficient conditions such that the random set is almost sure…
The metric projections onto closed convex cones in a Hilbert space
Yanqi Qiu, Zipeng Wang
We study the metric projection onto the closed convex cone in a real Hilbert space generated by a sequence . The first main result…
Toeplitz operators between distinct Bergman spaces
Siyu Wang, Zipeng Wang
For , let be the standard weight on the unit disk. In this note, we provide descriptions of the boundedness and compactness for the Toeplitz…
Hyper-positive definite functions II: A complete study of branching-Toeplitz operators
Yanqi Qiu, Zipeng Wang
We introduce and give a more or less complete study of a family of branching-Toeplitz operators on the Hilbert space indexed by a rooted homogeneous tree of deg…