Mathematical Encounters

Abstract

This evocative essay focuses on mathematical activities witnessed by the author along 1962-64 at IMPA. The list of research problems proposed in September 1962 by Mauricio Peixoto at the Seminar on the Qualitative Theory of Differential Equations is pointed out as a landmark for the beginning of the systematic research in the Qualitative Theory of Differential Equations and Dynamical Systems in Brazil.