As well as Klein, Brill worked at the Technische Hochschule in Munich and Ricci-Curbastro attended lectures by both these famous mathematicians.
Pati na rin ang Klein, Brill nagtrabaho sa Technische Hochschule sa Munich at Ricci-Curbastro pumasok sa lektura sa pamamagitan ng parehong mga bantog na mathematicians.