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math.AP2026

Uniqueness of radial solutions for -Laplacian equations in low dimensions

Patrizia Pucci, Jianjun Zhang, Xuexiu Zhong

This paper extends the uniqueness results of Serrin and Tang [\textit{Indiana Univ. Math. J.}, 49 (2000), pp. 897--923] to the low-dimensional case with . We c…

math.AP2025

Multiple normalized solutions for two coupled Gross-Pitaevskii equations with attractive interactions and mass constriants

Zhang Jianjun, Zhong Xuexiu, Zhou Jinfang

We are concerned with the following system of two coupled time-independent Gross-Pitaevskii equations $$ \begin{cases} -Δu+λ_1 u=μ_1|u|^{p-2}u+να|u|^{α-2}|v|^βu ~\hbox{in}~…

math.AP2025

Normalized solutions of coupled Sobolev critical Schrodinger equations with mass subcritical couplings

Zhang Jianjun, Zhong Xuexiu, Zhou Jinfang

We are concerned with qualitative properties of positive solutions to the following coupled Sobolev critical Schrödinger equations $$ \begin{cases} -Δu+λ_1 u=μ_1|u|^{2^*-2}u+ν…

math.AP2025

Serrin-type Overdetermination in Scaling Limits: Sharp Existence and Asymptotic Behavior of Quasi-linear Schrödinger Energy Ground States

Louis Jeanjean, Jianjun Zhang, Xuexiu Zhong

This paper establishes optimal existence results and limiting profiles for energy ground states of the quasi-linear Schrödinger equation $$ -Δu - Δ(|u|^{2})u + λu = |u|^{p-2}u…

math.AP2024

Normalized solutions of quasilinear Schrödinger equations with a general nonlinearity

Ting Deng, Marco Squassina, Jianjun Zhang +1

We are concerned with solutions of the following quasilinear Schrödinger equations \begin{eqnarray*} -{\mathrm{div}}\left(φ^{2}(u) \nabla u\right)+φ(u) φ^{\prime}(u)|\nabla u|^…