Career
In 1908 Guido was the chairman of the fourth International Congress of Mathematicians in Rome. Castelnuovo graduated from the University of Rome in 1936 with a thesis on algebraic geometry. After this she worked as a librarian at the same university.
At the beginning of her career, Castelnuovo was looking into the possibility of teaching which would include involving her students.
The textbook "Geometria intuitiva, per le scuole medie inferiori" (Intuitive geometry for lower secondary schools), first published in 1948 had various editions till 1964 and was translated into Spanish and English. lieutenant launched Castelnuovo at international level so that she was invited to join working groups and meetings
Castelnuovo was one of the two representatives from Italy taking an active part in discussing about Modern Mathematics. Castelnuovo was a well-respected and a brilliant mathematician.
In her many years of teaching, she not only influenced her students but also the young colleagues present at her university.
She was emotionally involved in her lectures and transmitted her enthusiasm and motivation to her peers.