Chen-Feng Zhu

activity

20222026

most citedParabolic Muckenhoupt Weights Characterized by Parabolic Fractional Maximal and Integral Operators with Time Lag

4 citations · 5 across the 7 of their papers we have counts for

collaborators

8 papers

math.FA2026

Real-Variable Theory of Hardy--Lorentz Spaces on Quasi-Ultrametric Spaces of Homogeneous Type with Reverse-Doubling Property

Chenfeng Zhu, Ryan Alvarado, Xianjie Yan +2

Let $(X, q, μ)$ be an ultra-RD-space with upper dimension $n \in (0, \infty)$ ; i.e., it is a quasi-ultrametric space of homogeneous type whose measure $μ$ satisfies an addition…

math.FA2025

Maz'ya--Shaposhnikova Representation of Quasi-Norms of Ball Quasi-Banach Function Spaces on Spaces of Homogeneous Type with Weak Reverse Doubling Property

Eiichi Nakai, Menghao Tang, Dachun Yang +2

Let $Y (X)$ be a ball quasi-Banach function space on the space of homogeneous type $(X, ρ, μ)$ satisfying some mild additional assumptions, $q \in (0, \infty)$ , and $…

math.FA2025

Parabolic Extrapolation and Its Applications to Characterizing Parabolic BMO Spaces via Parabolic Fractional Commutators

Mingming Cao, Weiyi Kong, Dachun Yang +2

In this article, we establish the parabolic version of the celebrated Rubio de Francia extrapolation theorem. As applications, we obtain new characterizations of parabolic BMO-type…

math.AP2024★ 4 cited

Parabolic Muckenhoupt Weights Characterized by Parabolic Fractional Maximal and Integral Operators with Time Lag

Weiyi Kong, Dachun Yang, Wen Yuan +1

In this article, motivated by the regularity theory of the solutions of doubly nonlinear parabolic partial differential equations the authors introduce the off-diagonal two-weight…

math.FA2023★ 1 cited

Extension Theorem and Bourgain--Brezis--Mironescu-Type Characterization of Ball Banach Sobolev Spaces on Domains

Chenfeng Zhu, Dachun Yang, Wen Yuan

Let $Ω \subset R^{n}$ be a bounded $(ε, \infty)$ -domain with $ε \in (0, 1]$ , $X (R^{n})$ a ball Banach function space satisfying some extra mild assumpti…

math.FA2023

Brezis--Seeger--Van Schaftingen--Yung-Type Characterization of Homogeneous Ball Banach Sobolev Spaces and Its Applications

Chenfeng Zhu, Dachun Yang, Wen Yuan

Let $γ \in R ∖ {0}$ and $X (R^{n})$ be a ball Banach function space satisfying some extra mild assumptions. Assume that $Ω = R^{n}$ or $Ω\subset\mathbb{R}…

math.FA2023

Generalized Brezis--Van Schaftingen--Yung Formulae and Their Applications in Ball Banach Sobolev Spaces

Chenfeng Zhu, Dachun Yang, Wen Yuan

Let $X$ be a ball Banach function space on $R^{n}$ . In this article, under some mild assumptions about both $X$ and the boundedness of the Hardy--Littlewood maximal operator…

math.AP2022

Parabolic Muckenhoupt Weights on Spaces of Homogeneous Type

Juha Kinnunen, Kim Myyryläinen, Dachun Yang +1

This work discusses parabolic Muckenhoupt weights on spaces of homogeneous type, i.e.\ quasi-metric spaces with both a doubling measure and an additional monotone geodesic property…