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Positive solutions for a Caputo-type fractional differential equation with a Riemann-Stieltjes integral boundary condition
Electronic Research Archive 2025, 33(6): 4027-4044
Published: 25 June 2025
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In this paper, we study the solvability of positive solutions for a Caputo-type fractional-order Riemann-Stieltjes integral boundary value problem. Under some monotonicity conditions for the nonlinearity, we use the upper-lower solution method to obtain two existence theorems.

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