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math.AP2026

Mixed local-nonlocal quasilinear problems with mixed interpolated Hardy potential

Yergen Aikyn, Sekhar Ghosh, Vishvesh Kumar +1

This paper addresses the existence of nontrivial solutions to a class of mixed local-nonlocal problems involving a mixed interpolated Hardy potential. We first establish a concentr…

math.AP2026

Nontrivial solutions for nonlinear problems driven by a superposition of fractional p-Laplacians with Neumann boundary conditions

Yergen Aikyn

In this paper, we investigate existence results for nonlinear nonlocal problems governed by an operator obtained as a superposition of fractional p-Laplacians, subject to Neumann b…

math.AP2026

Spectral analysis, maximum principles and shape optimization for nonlinear superposition operators of mixed fractional order

Yergen Aikyn, Sekhar Ghosh, Vishvesh Kumar +1

The main objective of this paper is to investigate the spectral properties, maximum principles, and shape optimization problems for a broad class of nonlinear ``superposition opera…

math.AP2025

Normalized Solutions and Semiclassical Concentration for Upper-Critical Fractional Choquard Equations

Yergen Aikyn, Yongpeng Chen, Michael Ruzhansky +1

We study a fractional Choquard equation with an upper-critical Hartree term, an -supercritical Hartree perturbation, and a semiclassical potential under a prescribed -mas…

math.AP2025

Brezis-Nirenberg type problems associated with nonlinear superposition operators of mixed fractional order

Yergen Aikyn, Sekhar Ghosh, Vishvesh Kumar +1

This paper aims to study the Brezis-Nirenberg type problem driven by the nonlinear superposition of operators of the form w…