Luiz Roberto Evangelista is a Professor of Physics in the Department of Physics at Universidade Estadual de Maringá (Paraná, Brazil) (Lre@dfi.uem.br). He received his Ph.D. in theoretical physics (field theory and particle physics) from the University of São Paulo, Brazil, in 1988. His research interests include complex fluids, complex systems, and the history of physics, with a focus on the mathematical physics of liquid crystals, normal and anomalous diffusion, adsorption-desorption phenomena, and modern boundary value problems, particularly in applications to liquid-crystalline systems and impedance spectroscopy. He is the author of several books on the history of physics, on the elasticity of liquid crystals, and fractional calculus applied to anomalous diffusion phenomena, including the more recent "Fractional Diffusion Equations and Anomalous Diffusion" (Cambridge University Press, 2018) and "An Introduction to Anomalous Diffusion and Relaxation" (Springer, 2023).