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Jacques Hadamard

1865 - 1963

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Jacques Salomon Hadamard (French: [adamaʁ]; 8 December 1865 – 17 October 1963) was a French mathematician who made major contributions in number theory, complex analysis, differential geometry and partial differential equations. Read more on Wikipedia

Since 2007, the English Wikipedia page of Jacques Hadamard has received more than 289,249 page views. His biography is available in 46 different languages on Wikipedia (up from 43 in 2019). Jacques Hadamard is the 134th most popular mathematician (up from 147th in 2019), the 1,009th most popular biography from France (up from 1,083rd in 2019) and the 29th most popular French Mathematician.

Jacques Hadamard is most famous for his book "An Essay on the Psychology of Invention in the Mathematical Field" which he published in 1945. This book was the first of its kind to study the psychology of mathematical invention.

Memorability Metrics

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    Historical Popularity Index (HPI)

  • 46

    Languages Editions (L)

  • 8.91

    Effective Languages (L*)

  • 3.05

    Coefficient of Variation (CV)

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Among mathematicians, Jacques Hadamard ranks 134 out of 823Before him are Andrey Markov, Simplicius of Cilicia, Alexis Clairaut, Michel Rolle, Liu Hui, and Robert Grosseteste. After him are Joseph Liouville, Giambattista della Porta, William Oughtred, Vincenzo Viviani, Robert Aumann, and Johannes Trithemius.

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Among people born in 1865, Jacques Hadamard ranks 26Before him are Frederick Augustus III of Saxony, Félix Vallotton, Akseli Gallen-Kallela, Arthur Harden, Amélie of Orléans, and Benjamin Guggenheim. After him are John Mott, L'Inconnue de la Seine, Mikao Usui, Wilfrid Voynich, Valentin Serov, and Rashid Rida. Among people deceased in 1963, Jacques Hadamard ranks 30Before him are Abd al-Karim Qasim, Yitzhak Ben-Zvi, Michael Rockefeller, Carmen Amaya, Theodore von Kármán, and Richard Baer. After him are Georg-Hans Reinhardt, Richard Barthelmess, Józef Gosławski, Kurt Zeitzler, Oleg Penkovsky, and Pedro Armendáriz.

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In France

Among people born in France, Jacques Hadamard ranks 1,009 out of 6,011Before him are Antoine Galland (1646), Charles-Marie Widor (1844), Lucien Laurent (1907), Joseph Pitton de Tournefort (1656), René II, Duke of Lorraine (1451), and Claude of France (1547). After him are Charles-Valentin Alkan (1813), Clotilde of France (1759), Ambroise Thomas (1811), Carole Bouquet (1957), Léon Bourgeois (1851), and Maurice Denis (1870).


Among mathematicians born in France, Jacques Hadamard ranks 29Before him are Girard Desargues (1591), Charles Hermite (1822), Émile Borel (1871), Henri Lebesgue (1875), Alexis Clairaut (1713), and Michel Rolle (1652). After him are Joseph Liouville (1809), Gabriel Lamé (1795), Étienne Bézout (1730), Jean Gaston Darboux (1842), André Weil (1906), and René Thom (1923).