3 papers
math.AP2021
Singular quasilinear convective elliptic systems in
Umberto Guarnotta, Salvatore A. Marano, Abdelkrim Moussaoui
The existence of a positive entire weak solution to a singular quasi-linear elliptic system with convection terms is established, chiefly through perturbation techniques, fixed poi…
math.AP2019
On a singular Robin problem with convection terms
Umberto Guarnotta, Salvatore A. Marano, Dumitru Motreanu
In this paper, the existence of smooth positive solutions to a Robin boundary-value problem with non-homogeneous differential operator and reaction given by a nonlinear convection…
math.AP2018
Multiple nodal solutions to a Robin problem with sign-changing potential and locally defined reaction
U. Guarnotta, S. A. Marano, N. S. Papageorgiou
A Robin boundary-value problem with non-homogeneous differential operator, indefinite potential, and reaction defined only near zero is investigated. The existence of one or more n…