In this article, we investigate new results of existence and uniqueness for systems of
nonlinear coupled differential equations and inclusions involving Caputo-type sequential …

The goal of this study is to analyze and obtain a new numerical approach to an important
mathematical model called polio, which is one of the highly infectious and dangerous …

We study the existence and uniqueness of solutions for coupled Langevin differential
equations of fractional order with multipoint boundary conditions involving generalized …

Fractional-order boundary value problems are used to model certain phenomena in
chemistry, physics, biology, and engineering. However, some of these models do not meet …

The prime objective of the current study is to propose a novel mathematical framework under
the fractional-order derivative, which describes the complex within-host behavior of SARS …

The analysis of iterative differential equations is often related to the various applications of
calculus, which support all mathematical sciences. These equations are critical when it …

We investigate the existence criteria for solutions of a nonlinear coupled system of Hilfer–
Hadamard fractional differential equations of different orders complemented with nonlocal …

In this paper, we investigate the existence and Hyers–Ulam stability of a coupled differential
equations of fractional-order with multi-point (discrete) and integral boundary conditions that …

In this paper, we introduce and investigate the existence and stability of a tripled system of
sequential fractional differential equations (SFDEs) with multi-point and integral boundary …

In this manuscript, we deal with a nonlinear Langevin fractional differential equation that
involves the Caputo–Hadamard and Caputo fractional operators, with nonperiodic and …