Rolle's theorem proof

Rolle's theorem
Esther rolle
Esther rolle husband

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Michel Rolle

Michel Rolle's father was a shopkeeper. Michel had little formal education being largely self-educated after receiving some elementary schooling. He worked as a transcriber for a notary and then as an assistant to several attorneys in the district around his home town of Ambert. In 1675, probably seeking a better life, he went to Paris where he worked as a scribe and arithmetical expert. However, quite soon after he arrived in Paris he married and children quickly followed. His income was not sufficient to support his growing family but he had been studying higher mathematics on his own and it was the skill that he had developed in this discipline which provided the breakthrough.

In 1682 he achieved a certain fame by solving a problem which had been publicly posed by Jacques Ozanam. Jean-Baptiste Colbert, the controller general of finance and secretary of state for the navy under King Louis XIV of France, rewarded Rolle for this achievement. Colbert arranged a pension for Rolle which started him on the road to financial security, but there were other equally impo

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Michel Rolle

French mathematician

For other people with similar names, see Michael Roll (disambiguation).

Michel Rolle (21 April 1652 – 8 November 1719) was a French mathematician. He is best known for Rolle's theorem (1691). He is also the co-inventor in Europe^[1] of Gaussian elimination (1690).

Life

Rolle was born in Ambert, Basse-Auvergne. Rolle, the son of a shopkeeper, received only an elementary education. He married early and as a young man struggled to support his family on the meager wages of a transcriber for notaries and attorney. In spite of his financial problems and minimal education, Rolle studied algebra and Diophantine analysis (a branch of number theory) on his own. He moved from Ambert to Paris in 1675.

Rolle's fortune changed dramatically in 1682 when he published an elegant solution of a difficult, unsolved problem in Diophantine analysis. The public recognition of his achievement led to a patronage under minister Louvois, a job as an elementary mathematics teacher, and eventually to a short-termed administrative post in the Minis

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ROLLE, Henry (c.1590-1656), of the Inner Temple, London; later of Black and White Court, Old Bailey, London and Shapwick, Som.

Family and Education

b. c.1590,1 2nd s. of Robert Rolle (d.1633) of Heanton Satchville, Petrockstow, Devon and Joan, da. of Thomas Hele of Flete, Devon; bro. of Sir Samuel* and John*.2educ. Exeter Coll. Oxf. 1607 (aged 17); I. Temple 1609, called 1617.3m. 5 Apr. 1627, Margaret, da. of Thomas Bennett of St. Pancras, Soper Lane, London, Mercer and alderman, 1s.4d. 30 July 1656.5sig. Hen[ry] Rolle.

Offices Held

Fee’d counsel, Liskeard, Cornw. by 1625-at least 1636, London 1636;6 bencher, I. Temple 1633, Lent reader 1638;7 recorder, Dorchester, Dorset, 1636-47;8 sjt.-at-law 1640;9 common pleader, London 1644-5;10 j.k.b. 1645-8, c.j.k.b. 1648-9, c.j. Upper Bench 1649-55;11 justice of assize, Western circ. 1646, 1650, 1654-5, Midland circ. 1647-8, Norf. circ. 1649, 1652-3.12

Commr. oyer and terminer, Western circ. 1641-2, 1654-d.,13 London 1654-d.,14 Mdx. 1654,15 Thetford, Norf. 1654,16 Oxf. circ. 1654-5, Home circ. 1654-5, Midland cir