Abstract
We study some critical elliptic problems involving the difference of two nonlocal operators, or the difference of a local operator and a nonlocal operator.
The main result is the existence of two nontrivial weak solutions, one with negative energy and the other with positive energy, for all sufficiently small values
of a parameter.
The proof is based on an abstract result recently obtained in \cite{MR4293883}.
Publisher
Uniwersytet Mikolaja Kopernika/Nicolaus Copernicus University