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PELL, JOHN (16so-1685)

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Originally appearing in Volume V21, Page 69 of the 1911 Encyclopedia Britannica.
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PELL, See also:JOHN (16so-1685) , See also:English mathematician, was See also:born on the 1st of See also:March 1610 at Southwick in See also:Sussex, where his See also:father was See also:minister. He was educated at See also:Steyning, and entered Trinity See also:College, See also:Cambridge, at the See also:age of thirteen. During his university career he became an accomplished linguist, and even before he took his M.A. degree (in 163o) corresponded with See also:Henry See also:Briggs and other mathematicians. His See also:great reputation and the See also:influence of See also:Sir See also:William See also:Boswell, the English See also:resident, with the states-See also:general procured his See also:election in 1643 to the See also:chair of See also:mathematics in See also:Amsterdam, whence he removed in 1646, on the invitation of the See also:prince of See also:Orange, to See also:Breda, where he remained till 1652. F'*o**i. 1631 to 1638 Pell acted as See also:Cromwell's See also:political See also:agent to the See also:Protestant cantons of See also:Switzerland. On his return to See also:England he took orders and was appointed by See also:Charles II. to the rectory of Fobbing in See also:Essex, and in 1673 he was presented by See also:Bishop See also:Sheldon to the rectory of Laindon in the same See also:county. His devotion to mathematical See also:science seems to haye interfered alike with his See also:advancement in the See also:Church and with the proper management of his private affairs. For a See also:time he was confined as a debtor in the See also:king's See also:bench See also:prison. He lived, on the invitation of Dr See also:Whistler, for a See also:short time in 1682 at the College of Physicians, but died on the 12th of See also:December 1685 at the See also:house of Mr Cothorne, reader of the church of St See also:Giles-in-the See also:Fields. Many of Pell's See also:manuscripts See also:fell into the hands of Dr See also:Busby, See also:master of See also:Westminster School, and afterwards came into the See also:possession of the Royal Society; they are still preserved in something like See also:forty See also:folio volumes, which contain, not only Pell's own See also:memoirs, but much of his See also:correspondence with the mathematicians of his time. The Diophantine See also:analysis was a favourite subject with Pell; he lectured on it at Amsterdam; and he is now best remembered for the indeterminate See also:equation ax'+I =y2, which is known by his name.

This problem was proposed by See also:

Pierre de See also:Fermat first to Bernhard Frenicle de Bessy, and in 1657 to all mathematicians. Pell's connexion with the problem simply consists of the publication of the solutions of John See also:Wallis and See also:Lord Brounker in his edition of Branker's See also:Translation of Rhonius's See also:Algebra (1668). His See also:chief See also:works arc: Astronomical See also:History of Observations of Heavenly Motions and Appearances (1634); Ecliptica prognostica (1634); Controversy with See also:Longomontanus concerning the See also:Quadrature of the Circle (1646?); An See also:Idea of the Mathematics, 121110 (1650); A Table of Ten Thousand Square See also:Numbers (fol.; 1672).

End of Article: PELL, JOHN (16so-1685)

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