German mathematician who studied number theory and mathematical physics. He is best known for his work in relativity, where he proved that the theory of relativity could also be demonstrated geometrically.
He studied in Germany at the Albertina University of Konigsberg.
He worked in the Mathematics Department of Göttingen from 1902 to 1909.
He was born to a Jewish family in the Russian Empire.
German scientist Albert Einstein was a student of his.