Eigenvalue problems in fractional anisotropic Orlicz-Sobolev spaces

In this paper, we introduce the fractional anisotropic Orlicz-Sobolev spaces, and by using some variational methods, we establish the existence or non-existence of eigenvalues of fractional anisotropic problems involving a nonlocal integro-differential operator of elliptic type. In each case, the competition between the growth rates of the anisotropic coefficients plays an essential role in the description of the set of eigenvalues.