Charles Hayes was an English mathematician, chronologist and slave trader, born in 1678 and dead at his chambers in Gray's Inn on 18 December 1760. A member of Gray's Inn who had made a voyage to Africa and gained a reputation as a geographer, he was chosen annually sub-governor or deputy governor of the Royal African Company, which engaged in the Atlantic slave trade, and after its dissolution in 1752 he settled at Downe in Kent. His Treatise on Fluxions of 1704 was the first English work explaining Newton's method of infinitesimals: after an introduction on conic sections it applies the method to tangents, areas and then maxima and minima. He also printed a method of finding longitude in 1710 and a dialogue on the Moon in 1723, and from 1736 turned to Hebrew and chronology, defending the Septuagint and leaving unfinished his Chronographia Asiatica et Aegyptiaca. Charles Hutton remarked that his erudition was concealed by modesty.
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Charles Hayes (1678-1760) was an English mathematician, chronologist and slave trader who wrote a book on the method of fluxions.
Biography, birth
Charles Hayes (1678-1760) was an English mathematician, chronologist and slave trader who wrote a book on the method of fluxions.
Biography, gender
He also served as an official of the Royal African Company, which engaged in the Atlantic slave trade.
In Branch: Calculus, Lead, field of work
In 1704, appeared his Treatise on Fluxions, or an Introduction to Mathematical Philosophy, London, the first English work explaining Isaac Newton's method of infinitesimals.
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