The TaCS Center of Excellence in Theoretical and Computational Science (TaCS-CoE) was founded during the TaCS-Center 2014 which was successfully done at KMUTT, July  2013. It is a growing, interdisciplinary group of scholars from Theoretical and mathematical physics, nonlinear analysis, in particular, fixed point theory and to assess new developments, ideas, and methods in this important and dynamic field. A special emphasis will be put on applications in related areas, as well as other sciences, such as the natural sciences, medicine, economics, and engineering. TaCS-CoE (2021-2025) is Research Center of Excellence, research projects and publications at the King Mongkut’s University of Technology Thonburi (KMUTT).