Dachun Yang

activity

20242026

collaborators

Showing math.FAShow all

2 papers · 1 filter

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.FA2025

Fractional Heat Semigroup Characterization of Distances from Functions in Lipschitz Spaces to Their Subspaces

Feng Dai, Eero Saksman, Dachun Yang +2

Let $I^_{s}$ denote the inhomogeneous Lipschitz space of order $s \in (0, \infty)$ on $R^{n}$ . This article characterizes the distance $d(f, V)_{Î_s}: = \inf_{g\in V} \|f-g\|_{Î…