TY - JOUR ID - Li2025 LB - Li2025 AU - Li, Chun AU - Mugnai, Dimitri AU - Zhao, Tai-Jin TI - Nontrivial solutions for Neumann fractional p-Laplacian problems ST - Nontrivial solutions for Neumann fractional p-Laplacian problems JO - Opuscula Math. JA - Opuscula Math. JF - Opuscula Mathematica PY - 2025 VL - 45 IS - 5 SP - 623 EP - 645 DO - https://doi.org/10.7494/OpMath.2025.45.5.623 UR - https://doi.org/10.7494/OpMath.2025.45.5.623 AB - In this paper, we investigate some classes of Neumann fractional \(p\)-Laplacian problems. We prove the existence and multiplicity of nontrivial solutions for several different nonlinearities, by using variational methods and critical point theory based on cohomological linking. KW - fractional \(p\)-Laplacian KW - Neumann boundary condition KW - linking over cones SN - 1232-9274 ER -