Ziwei Li

activity

20222026

collaborators

5 papers

cs.IT2026

Stable Image Reconstruction via Two-Parameter Power-Scale Variation Minimization

Ziwei Li, Wengu Chen, Huanmin Ge +2

In this article, we introduce a power-scale variation (PSV $_{a, p}$ ) with two tunable parameters: the sparsity-inducing exponent $p \in (0, 1]$ and the scaling factor $a \in (0, \infty)$ .…

math.FA2026

A Novel Two-Parameter Penalty: Relaxation Degree Analysis and Sparse Signal Recovery

Ziwei Li, Wengu Chen, Huanmin Ge +1

In this article, we introduce a nonconvex two-parameter penalty function $P_{a, p}$ , parameterized by $a \in (0, \infty)$ and $p \in (0, 1]$ , and the relaxation degree RD $_{P}$ for a separa…

math.FA2026

Matrix-Weighted Poincaré-Type Inequalities with Applications to Logarithmic Hajłasz--Besov Spaces on Spaces of Homogeneous Type

Ziwei Li, Dachun Yang, Wen Yuan

Let $X$ be a space of homogeneous type. In this article, based on the reducing operators of matrix $A_{p}$ -weights, the authors introduce the vector-valued Hajłasz gradi…

math.AP2025

Multiplicity of bound states for a class of nonlinear Dirac equations on generalized star graphs with potentials

Guangze Gu, Ziwei Li, Michael Ruzhansky +1

In this paper we investigate the existence and multiplicity of bound states for a class of nonlinear Dirac equations on a generalized star graph $\mathcal{G}$: \[ -ic\,σ_1\,\part…

math.FA2022

Pointwise Multipliers for Besov Spaces $B_{p, \infty}^{0, b} (R^{n})$ with Only Logarithmic Smoothness

Ziwei Li, Winfried Sickel, Dachun Yang +1

In this article, we establish a characterization of the set $M (B_{p, \infty}^{0, b} (R^{n}))$ of all pointwise multipliers of Besov spaces $B_{p, \infty}^{0, b} (R^{n})$ wi…

Stable Image Reconstruction via Two-Parameter Power-Scale Variation Minimization

A Novel Two-Parameter Penalty: Relaxation Degree Analysis and Sparse Signal Recovery

Matrix-Weighted Poincaré-Type Inequalities with Applications to Logarithmic Hajłasz--Besov Spaces on Spaces of Homogeneous Type

Multiplicity of bound states for a class of nonlinear Dirac equations on generalized star graphs with potentials

Pointwise Multipliers for Besov Spaces Bp,∞0,b​(Rn) with Only Logarithmic Smoothness

Pointwise Multipliers for Besov Spaces $B_{p, \infty}^{0, b} (R^{n})$ with Only Logarithmic Smoothness