Edmundo Capelas de Oliveira is a Professor and Researcher at the Department of Applied Mathematics at the Institute of Mathematics, Statistics and Scientific Computing, State University of Campinas (Unicamp), Brazil. He got his PhD in Physics (1982) from the same university, and did post-doc studies (in 1991 and 1995) at the Università degli Studi di Perugia, Italy. In 2012, he was distinguished by Unicamp with the First Award for Undergraduate Teaching Incentive for outstanding teaching skills at the undergraduate level. He authored ""Solved Exercises in Fractional Calculus"" (2019) and co-authored ""Mastering Calculus through Practice"" (2021) and ""The Many Faces of Maxwell, Dirac and Einstein Equations: A Clifford Bundle Approach"" (2016), all published by Springer. His research interests lie in fractional calculus, differential equations, and special functions. José Emílio Maiorino is a public officer at Universidade Estadual de Campinas (Unicamp), Brazil. He holds a Master's degree in Logic and Philosophy of Science and a PhD in Physics from the same university.