Indefinite Schrödinger equation with nonlinearity sublinear at zero

AbstractWe consider stationary Schrödinger equations with indefinite potential and nonlinearity sublinear at u = 0. Using linking theorem and symmetric mountain pass theorem, existence and multiplicity results are obtained.Keywords: Indefinite Schrödinger equationscritical pointssublinear at zerosuperlinear at infinitylinking theoremAMS Subject Classifications: 35J6558E05 AcknowledgmentsThe authors would like to thank the referees for their invaluable comments and suggestions on the previous version of this paper.Disclosure statementNo potential conflict of interest was reported by the author(s).