Coolidge
# Julian Lowell Coolidge

### Born: 28 Sept 1873
in Brookline, Boston, Massachusetts, USA

Died: 5 March 1954
in Cambridge, Massachusetts, USA

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**Julian Coolidge** was educated at Harvard and Oxford and went to Turin and studied under Corrado Segre and to Bonn where he studied under Study. He taught most of his career in Harvard.
He wrote many good texts on geometry including The Elements of Non-Euclidean Geometry (1909), A Treatise on the Circle and the Sphere (1916) and The Geometry of the Complex Domain (1924). Coolidge also wrote on probability with An Introduction to Mathematical Probability (1925) and on the history of mathematics with works such as A History of Geometrical Methods (1940), A History of the Conic Sections and Quadric Surfaces (1945), and The Mathematics of Great Amateurs (1949).

**References (3 books/articles)**

JOC/EFR December 1996