*Science and Its Times*. ©2005-2006 Thomson Gale, a part of the Thomson Corporation. All rights reserved.

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**1647?-1734**

**Italian Mathematician**

As an engineer, Giovanni Ceva concerned himself with applied mathematics; but his other career, as a geometer, took him deep into the realm of pure math. He became the era's foremost authority on geometric problems, working particularly with transversals, and is also credited with Ceva's theorem, on a triangle's center of gravity. Other writings addressed areas of mathematical application ranging from mechanics to economics.

The son of a wealthy and influential family—his younger brother Tomasso (1648-1737), was destined to become a famous mathematician as well—Ceva studied at Pisa. Some of his most significant writing appeared during the late 1670s and early 1680s, when he was in his early to mid-thirties. Perhaps his most notable work was *De lineis rectis* (Concerning Straight Lines), published in 1678. This work contained Ceva's theorem, on the geometry of triangles, which in turn related to an area...

This section contains 474 words(approx. 2 pages at 300 words per page) |