Esteban Terradas i Illa

Esteban Terrades i Illa (15 September 1883, in Barcelona – 9 May 1950, in Madrid) also known as Esteve Terradas, was a Spanish mathematician, scientist and engineer. He researched and taught widely in the fields of mathematics and the physical sciences, working not only in his native Catalonia, but also in the rest of Spain and in South America. He was also active as a consultant in the Spanish aeronautics, electric power, telephone and railway industries.