TY - JOUR T1 - An Inverse Operator Approach to a Fractional Nonlinear Integro-Differential Equation AU - Li , Chenkuan AU - Liao , Wenyuan AU - Saadati , Reza JO - Analysis in Theory and Applications VL - 2 SP - 172 EP - 196 PY - 2025 DA - 2025/07 SN - 41 DO - http://doi.org/10.4208/ata.OA-2024-0043 UR - https://global-sci.org/intro/article_detail/ata/24281.html KW - Fractional nonlinear integro-differential equation, uniqueness and existence, fixed point theory, multivariate Mittag-Leffler function, inverse operator. AB -

This paper studies the existence, uniqueness and stability for a new fractional nonlinear integro-differential equation with an integral boundary condition using several well-known fixed point theorems in a Banach space. The method used is to convert the equation into an equivalent implicit integral equation based on a bounded inverse operator which is an infinite series and uniformly convergent. Furthermore, we compute approximate values of a few multivariate Mittag-Leffler functions by our Python codes in illustrative examples demonstrating the use of key theorems derived. These investigations have a wide range of applications as existence, uniqueness and stability often appear in various pure and applied research areas.