Zhi-An Wang

collaborators

2 papers

math.AP2025

Non-convergence of the principal eigenvalue of elliptic operators for large advection

Xueli Bai, Zhi-An Wang, Xin Xu +2

This paper investigates the limit of the principal eigenvalue $I^» (s)$ as $s \to + \infty$ for the following elliptic equation \begin{align*} -ÎÏ(x)-2s\mathbf{v}\cdot\nablaÏ(x)+c(x)…

math.AP2025

Infinitely many self-similar blow-up profiles for the Keller-Segel system in dimensions 3 to 9

Van Tien Nguyen, Zhi-An Wang, Kaiqiang Zhang

Based on the method of matched asymptotic expansions and Banach fixed point theorem, we rigorously construct infinitely many self-similar blow-up profiles for the parabolic-ellipti…