Attia, ChahiraMechrouk, SalimaSaifi, Ouiza2022-03-222022-03-222022DOI: https://doi.org/10.22199/issn.0717-6279-4658https://dspace.univ-boumerdes.dz/handle/123456789/7723We provide in this work sufficient conditions for existence and multiplicity of positive unbounded solutions for a class of singular second-order boundary value problem associated with a φ-Laplacian operator and posed on the half-line. The proofs are based on a theo- rem of cone expansion and compression in a Banach space.enConesSecond orderUnbounded solutionSingular probLemFixed point theoryPositive solutionExistence and multiplicity of positive unbounded solutions for singular BVPs with the φ-Laplacian operator on the half lineArticle