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5 papers

math.AP2026

Qualitative bifurcation diagram for Grad-Shafranov type equations

Daniele Bartolucci, Guangze Gu, Aleks Jevnikar +2

The paper investigates qualitative properties of solutions to Grad‑Shafranov type equations, providing conditions for uniqueness, monotonicity and non‑existence of free boundaries…

math.AP2026

Isolated Singularities for Fractional Hartree Equations

Guangze Gu, Aleks Jevnikar, Zhipeng Yang

We study isolated singularities of positive solutions to a fractional Hartree equation with Riesz interaction, \[ (-Δ)^s u = \left( \int_{\mathbb{R}^N\setminus\{0\}} \frac{u^p(y)}…

math.AP2025

On nonlinear elliptic problems with Hardy-Littlewood-Sobolev critical exponent and Sobolev-Hardy critical exponent

Guangze Gu, Aleks Jevnikar

In this paper we use variational methods to establish the existence of solutions for a class of nonlinear elliptic problems involving a combined convolution-type and Hardy nonlinea…

math.AP2025

Nonlocal problems with Hardy-Littlewood-Sobolev critical exponent and Hardy potential

Guangze Gu, Aleks Jevnikar

We are concerned with a Brezis-Nirenberg type problem for a critical Choquard equation, in the sense of Hardy-Littlewood-Sobolev inequality, and with the Hardy potential in a smoot…

math.AP2025

Symmetry and monotonicity of singular solutions for the Hartree equation

Ying Cai, Guangze Gu, Aleks Jevnikar

In this paper we are concerned with positive singular solutions of the following nonlocal Hartree equation $$-Δu\!=\Big( \int_{\mathbb{R}^N\setminus Γ}\frac{F(u(y))}{|x-y|^μ}dy…