@article{article_709442, title={Upper and Lower Solution method for Positive solution of generalized Caputo fractional differential equations}, journal={Advances in the Theory of Nonlinear Analysis and its Application}, volume={4}, pages={279–291}, year={2020}, DOI={10.31197/atnaa.709442}, author={Patil, Jayshree and Chaudhari, Archana and Abdo, Mohammed and Hardan, Basel}, keywords={fractional differential equations,existence and upper and lower solutions,Mittag-Leffler function,generalized Laplace transform,fixed point theorems}, abstract={In this research paper, the nonlinear fractional relaxation equation involving the generalized Caputo derivative is reduced to an equivalent integral equation via the generalized Laplace transform. Moreover, the upper and lower solutions method combined with some fixed point theorems, and the properties of the Mittag-Leffler function are applied to investigate the existence and uniqueness of positive solutions for the problem at hand. At the end, to illustrate our results, we give an example.}, number={4}, publisher={Erdal KARAPINAR}, organization={No financial support}