Luciano Pereira da Silva holds a PhD in Numerical Methods in Engineering (2022) from the Federal University of Paraná, Brazil, and a Master's degree in Computational and Applied Mathematics (2017) from the São Paulo State University (UNESP), Brazil. His research interests lie in numerical methods for partial differential equations, notably geometric and algebraic multigrid methods to accelerate the convergence of numerical solutions. Messias Meneguette Junior is a Professor at the São Paulo State University, Brazil. He holds a PhD in Numerical Analysis (1987) and a Master's degree in Mathematical Modelling and Numerical Analysis (1983), both from the University of Oxford, UK. He also has a Master's degree in Mathematics (1981) from the University of São Paulo/ICMC São Carlos, Brazil. Carlos Henrique Marchi has a PhD in Mechanical Enginering (2001) and a Master's degree (1992), both from the Federal University of Santa Catarina, Brazil. His research activities focus on variational principles and numerical methods.