AUTHOR=Ali Umair , Naeem Muhammad , Alahmadi Reham , Abdullah Farah Aini , Khan Muhammad Asim , Ganie Abdul Hamid TITLE=An investigation of a closed-form solution for non-linear variable-order fractional evolution equations via the fractional Caputo derivative JOURNAL=Frontiers in Physics VOLUME=Volume 11 - 2023 YEAR=2023 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2023.1114319 DOI=10.3389/fphy.2023.1114319 ISSN=2296-424X ABSTRACT=The nonlinear traveling or soliton wave solutions for variable-order fractional evolution equations (VO-FEE) is very challenging and important task in recent research fields. The aims of this study is to discuss the nonlinear space-time variable-order fractional shallow water wave equation that represent non-linear dispersive waves in the shallow water channel by Khater method in Caputo fractional derivative (CFD) sense. The transformation equation can be used to get the nonlinear integer-order ordinary differential equation (ODE) from the proposed equation. Also, built new exact solutions as Kink and periodic types solutions for nonlinear space-time variable-order fractional shallow water waves equation. This confirms the nonlinear fractional variable-order evolution equations are natural and very attractive in mathematical physics.