2006 1929 births 2017 deaths Brazilian educators People from Maceió University of Chicago alumni Recipients of the Great Cross of the National Order of Scientific Merit (Brazil) Topologists Textbook writers Instituto Nacional de Matemática Pura e Aplicada researchers Members of the Brazilian Academy of Sciences 21st-century Brazilian mathematicians 20th-century Brazilian mathematicians 20th-century Brazilian writers 20th-century Brazilian educators 21st-century Brazilian educators 21st-century Brazilian writers Brazilian non-fiction writers