Jean pierre danel biography of william hill
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Virgil Hill
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Daniel Harvey Hill
Daniel Harvey Hill was born on July 12, 1821, in what is now York County, South Carolina. He entered West Point in 1838 and graduated in 1842, finishing 28th in his class of 56. Among his classmates were several future Civil War generals, including William S. Rosecrans, Abner Doubleday, Earl Van Dorn, and James Longstreet. After his graduation he was assigned to the 1st US Artillery.
In the Mexican War, Hill was brevetted twice, first for bravery at the Battles of Contreras and Churubusco, then for bravery at the Battle of Chapultepec. He also fought at Vera Cruz and Cerro Gordo. In 1849 he resigned his commission and became a professor of mathematics at Washington College (now Washington and Lee University). In 1854 he joined the faculty of Davidson College in North Carolina and in 1859 he became the superintendent of the North Carolina Military Institute.
While teaching mathematics, Hill wrote an algebra textbook, entitled Elements of Algebra, which included
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George William Hill
American mathematical astronomer (1838–1914)
For other people named George Hill, see George Hill (disambiguation).
George William Hill (March 3, 1838 – April 16, 1914) was an American astronomer and mathematician. Working independently and largely in isolation from the wider scientific community, he made major contributions to celestial mechanics and to the theory of ordinary differential equations. The importance of his work was explicitly acknowledged bygd Henri Poincaré in 1905. In 1909 Hill was awarded the Royal Society's Copley Medal, "on the ground of his researches in mathematical astronomy". Hill is remembered for the Hill differential equation, along with the Hill sphere.
Early life and education
[edit]Hill was born in New York City to painter and engraver John William Hill and his wife, Catherine Smith. He moved to West Nyack with his family when he was eight years old. After high school, Hill attended Rutgers College, where he became in