Fabio Silva Botelho obtained a Ph.D, in Mathematics from Virginia Tech, USA in 2009. Prior to that got his undergraduate (1992) and master (1996) degrees in Aeronautical Engineering from the Technological Institute of Aeronautics, ITA, SP, Brazil. From 2004 to 2015 he was an Assistant Professor at the Mathematics Department of Federal University of Pelotas in Brazil. Since 2015 he has worked as an Adjunct Professor at the Department of mathematics of Federal University of Santa Catarina, in Florianopolis, SC, Brazil. His fields of reserach are Functional Analysis, Calculus of Variations, Duality and Numerical Analysis applied to problems in Physics and Engineering. He has published three books, Functional Analysis and Applied Optimization in Banach Spaces (2014), Real Analysis and Applications (2018), both with Springer, and Functional Analysis, Calculus of Variations and Numerical Methods for Models in Physics and Engineering (2020), published by CRC Taylor and Francis. He is also the author of a generalization of the Method of Lines, a numerical method for solving partial differential equations in which the domain of the equation in question is discretized in lines and the concerning solution is written on these lines as functions of the boundary conditions and the domain boundary shape.

SECTION I: ADVANCED CALCULUS. The Implicit Function Theorem and Related Results. Manifolds in Rn. SECTION II: APPLICATIONS TO VARIATIONAL QUANTUM MECHANICS AND RELATIVITY THEORY. A Variational Formulation for the Relativistic Klein-Gordon Equation. Some Numerical Results and Examples. A variational formulation for relativistic mechanics based on Riemannian geometry and its application to the quantum mechanics context. A General Variational Formulation for Relativistic Mechanics Based on Fundamentals of Differential Geometry. A New Interpretation for the Bhor Atomic Model. Existence and Duality for Superconductivity and Related Models. A Classical Description of the Radiating Cavity Model in Quantum Mechanics.