Ruas was born on 5 January 1948, in Lins, São Paulo. She became interested in mathematics through a junior high school mathematics teacher, Râmisa Jorge, [1 ] and after entering university study in 1967, [2 ] earned a licenciate in…
María Cristina Španělská (Doña María Cristina Teresa Alejandra María de Guadalupe María de la Concepción Ildefonsa Victoria Eugenia de Borbón y Battenberg; 12. prosince 1911, Královský palác v Madridu – 23.