Tullio Levi-Civita’s photographic portrait aged 60.
Tullio Levi Civita was an Italian mathematician, most famous for his work on absolute differential calculus (tensor calculus) and its applications to the theory of relativity, but who also made significant contributions in other areas.
Because his Jewish origin, he is deprived of his professorship and of his membership of all scientific societies until his death.
Who-is-Who in MMS, History of machines, history of mechanical engineering, theory, teacher, treatizer.