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Existence of positive solutions to a boundary value problem for a delayed nonlinear fractional differential system. (English) Zbl 1219.34103
Summary: We consider a boundary value problem of a general delayed nonlinear fractional system. By means of some fixed point theorems and the properties of the Green function, we establish several sets of sufficient conditions for the existence of positive solutions. The obtained results extend and include some existing ones and are illustrated by some examples.

##### MSC:
 34K37 Functional-differential equations with fractional derivatives 34K10 Boundary value problems for functional-differential equations
##### Keywords:
fixed point theorems; Green function
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##### References:
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