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Jean Le Rond d'Alembert Born: 17 Nov 1717 in Paris, France Died: 29 Oct 1783 in Paris, France

Jean Le Rond d'Alembert Born: 17 Nov 1717 in Paris, France Died: 29 Oct 1783 in Paris, France. Illegitimate son of an ex nun.

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Jean Le Rond d'Alembert Born: 17 Nov 1717 in Paris, France Died: 29 Oct 1783 in Paris, France

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  1. Jean Le Rond d'Alembert Born: 17 Nov 1717 in Paris, France Died: 29 Oct 1783 in Paris, France Illegitimate son of an ex nun ‘Thus metaphysics and mathematics are, among all the sciences that belong to reason, those in which imagination has the greatest role. I beg pardon of those delicate spirits who are detractors of mathematics for saying this .... ‘ - Discours Preliminaire de L'Encyclopedie, Tome 1, 1967. pp 47 - 48. FRS Elected 1748 Crater d'Alembert Rue d'Alembert (14th Arrondissement)

  2. Joseph-Louis Lagrange (Giuseppe Lodovico Lagrangia) Born: 25 Jan 1736 in Turin, Sardinia-Piedmont (now Italy) Died: 10 April 1813 in Paris Impressed Euler with his work on Calculus of Variations Appointed professor at age 19. ‘If I had been rich, I probably would not have devoted myself to mathematics.’ Elected FRS 1791 Crater Lagrange Rue Lagrange (5th Arrondissement) Via Giuseppe Lodovico Lagrange Commemorated on the Eiffel Tower

  3. Leonhard Euler Born: 15 April 1707 in Basel, Switzerland Died: 18 Sept 1783 in St Petersburg, Russia A giant of Mathematics. Philosophy – Theology -Mathematics Basel, St. Petersburg, Berlin. Wrote ~390 articles. Worked on just about everything Invented notation f(x), e, i, p Elected FRS 1747 Crater Euler and Rima Euler Rue Euler (8th Arrondissement)

  4. Sir William Rowan Hamilton Born: 4 Aug 1805 in Dublin, IrelandDied: 2 Sept 1865 in Dublin, Ireland • Knew Latin, Greek, Hebrew by age 5 • Took up maths at 12 inspired by losing mental arithmetic competition. • Fancied himself a poet. Friend of Wordsworth (who recommended he stick to the day job). • Appointed Professor of Astronomy at Trinity College while he was still an undergraduate aged 21. • Mechanics, Optics, Astronomy, Mathematics • Hamiltonian. Quaternions • i2=j2=k2=ijk=-1 (Brougham Bridge) • ‘Quaternions came from Hamilton after his really good work had been done, and though beautifully ingenious, have been an unmixed evil to those who have touched them in any way’ Lord Kelvin Royal Society Royal Medal Awarded 1835 Crater Hamilton Knighted in 1835

  5. Marius Sophus Lie Born: 17 Dec 1842 in Nordfjordeide, Norway Died: 18 Feb 1899 in Kristiania (now Oslo), Norway • Invented • Lie Algebras (which he called groups) and • Lie Groups (which he also called groups) • Theorie der Transformationsgruppen in 3 volumes (with Engel) • ‘In Leipzig Lie was troubled by constant homesickness. A keen outdoor man, he missed the forests and mountains of Norway.’ Elected FRS 1895

  6. Carl Gustav Jacob Jacobi Born: 10 Dec 1804 in Potsdam, Prussia Died: 18 Feb 1851 in Berlin, Germany Contemporay of Gauss, Bessel, Abel, Legendre, Poisson, Fourier FRS 1833 Lunar Crater Jacobi

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