Abstract
In this paper, we investigate the existence of positive solutions for a system of nonlinear fractional differential equations with sign-changing nonlinearities. The result obtained in this paper essentially improves and extends some well-known results. An example demonstrates the main results.
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Xie, D., Bai, C., Zhou, H. et al. Positive solutions for a coupled system of semipositone fractional differential equations with the integral boundary conditions. Eur. Phys. J. Spec. Top. 226, 3551–3566 (2017). https://doi.org/10.1140/epjst/e2018-00041-3
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DOI: https://doi.org/10.1140/epjst/e2018-00041-3