By establishing a maximal principle and constructing upper and lower solutions, the existence of positive solutions for the eigenvalue problem of a class of fractional differential equations is discussed. Some sufficient conditions for the existence of positive solutions are established.
"Positive Solutions of Eigenvalue Problems for a Class of Fractional Differential Equations with Derivatives." Abstr. Appl. Anal. 2012 (SI11) 1 - 16, 2012. https://doi.org/10.1155/2012/512127