Ziwei Li

collaborators

4 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 PoincarÃ©-Type Inequalities with Applications to Logarithmic HajÅasz--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 HajÅasz grad…

math.AP2025

Nonlinear Dirac equations on noncompact quantum graphs with potentials: Multiplicity and Concentration

Guangze Gu, Ziwei Li, Michael Ruzhansky +1

In this paper, we study the existence and multiplicity of solutions to the following class of nonlinear Dirac equations (NLDE) on noncompact quantum graphs: \[ -i\,\varepsilon c\,Ï…

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

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

Matrix-Weighted PoincarÃ©-Type Inequalities with Applications to Logarithmic HajÅasz--Besov Spaces on Spaces of Homogeneous Type

Nonlinear Dirac equations on noncompact quantum graphs with potentials: Multiplicity and Concentration

Matrix-Weighted PoincarÃ©-Type Inequalities with Applications to Logarithmic HajÅasz--Besov Spaces on Spaces of Homogeneous Type