35 research outputs found

    Eigenvalue Problems for Systems of Nonlinear Boundary Value Problems on Time Scales

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    <p/> <p>Values of <it>&#955;</it> are determined for which there exist positive solutions of the system of dynamic equations, <inline-formula><graphic file="1687-1847-2007-031640-i1.gif"/></inline-formula>, <inline-formula><graphic file="1687-1847-2007-031640-i2.gif"/></inline-formula>, for <inline-formula><graphic file="1687-1847-2007-031640-i3.gif"/></inline-formula>, satisfying the boundary conditions, <inline-formula><graphic file="1687-1847-2007-031640-i4.gif"/></inline-formula>, where <inline-formula><graphic file="1687-1847-2007-031640-i5.gif"/></inline-formula> is a time scale. A Guo-Krasnosel'skii fixed point-theorem is applied.</p

    Positive solutions of the three-point boundary value problem for fractional-order differential equations with an advanced argument

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    Abstract In this article, we consider the existence of at least one positive solution to the three-point boundary value problem for nonlinear fractional-order differential equation with an advanced argument where 2 &lt; &#945; &#8804; 3, 0 &lt; &#951; &lt; 1, , CD&#945; is the Caputo fractional derivative. Using the well-known Guo-Krasnoselskii fixed point theorem, sufficient conditions for the existence of at least one positive solution are established. MSC (2010): 34A08; 34B18; 34K37.</p
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