Abstract
By using the Guo–Krasnosel’skii fixed point theorem and some height functions defined on special bounded sets, we investigate the existence and multiplicity of positive solutions for a class of nonlinear singular Riemann–Liouville fractional differential equations with sign-changing nonlinearities, subject to Riemann–Stieltjes boundary conditions which contain fractional derivatives.
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Luca, R. On a Class of Nonlinear Singular Riemann–Liouville Fractional Differential Equations. Results Math 73, 125 (2018). https://doi.org/10.1007/s00025-018-0887-5
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DOI: https://doi.org/10.1007/s00025-018-0887-5