Conrad Habicht (December 28, 1876 in Schaffhausen – October 23, 1958 in Schaffhausen) was a Swiss mathematician and close personal friend of Albert Einstein. Together with Maurice Solovine, the three founded the Olympia Academy, an informal circle of friends who met together in Bern from 1902 to 1904 to discuss physics.
Habicht and Solovine were the only two witnesses to Einstein's 1903 wedding to Mileva Marić.
Habicht was the recipient of Einstein's 1905 letter in which Einstein described his Annus Mirabilis papers.
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