This article demonstrates existence theorems for solutions of nonlinear fractional differential equations, implying new insights into cotangent derivative boundary value problems.
The article considers nonlinear fractional differential equations with cotangent derivative. The boundary conditions are multipoint and integral specified, and the nonlinear terms are in Orlicz function spaces. Several existence theorems for solutions of such boundary value problems are obtained by different fixed-point methods. Illustrative examples serve to illustrate the theoretical parts.
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Alqahtani et al. (2026) studied this question.
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