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Existence of positive solutions for boundary value problems of fractional functional differential equations. (English) Zbl 1213.34093

Summary: This paper deals with the existence of positive solutions for the boundary value problem involving a nonlinear functional differential equation of fractional order \(\alpha\) given by
\[ D^{\alpha} u(t) + f(t, u_t) = 0, t \in (0, 1),\quad 2 < \alpha \leq 3, \]
\[ u'(0) = 0, u'(1) = b u'(\eta),\quad u_0 = \phi. \]
Our results are based on the nonlinear alternative of Leray-Schauder type and Krasnosel’skii’s fixed point theorem.

MSC:

34K37 Functional-differential equations with fractional derivatives
47N20 Applications of operator theory to differential and integral equations
34K10 Boundary value problems for functional-differential equations