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Christopher Clavius

1538 - 1612

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Christopher Clavius, SJ (25 March 1538 – 6 February 1612) was a Jesuit German mathematician, head of mathematicians at the Collegio Romano, and astronomer who was a member of the Vatican commission that accepted the proposed calendar invented by Aloysius Lilius, that is known as the Gregorian calendar. Clavius would later write defences and an explanation of the reformed calendar, including an emphatic acknowledgement of Lilius' work. Read more on Wikipedia

Since 2007, the English Wikipedia page of Christopher Clavius has received more than 146,170 page views. His biography is available in 35 different languages on Wikipedia (up from 34 in 2019). Christopher Clavius is the 115th most popular mathematician (down from 103rd in 2019), the 675th most popular biography from Germany (down from 557th in 2019) and the 16th most popular German Mathematician.

Christopher Clavius is most famous for his work on the Gregorian calendar.

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  • 35

    Languages Editions (L)

  • 9.63

    Effective Languages (L*)

  • 2.25

    Coefficient of Variation (CV)

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Among mathematicians, Christopher Clavius ranks 115 out of 823Before him are Girard Desargues, Isaac Barrow, Theon of Alexandria, Charles Hermite, Grigori Perelman, and Josef Stefan. After him are Hermann Weyl, Leonid Kantorovich, Émile Borel, Aloysius Lilius, Edward Norton Lorenz, and Ferdinand von Lindemann.

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Among people born in 1538, Christopher Clavius ranks 2Before him is Charles Borromeo. After him are Caesar Baronius, Diane de France, Guglielmo Gonzaga, Duke of Mantua, Maeda Toshiie, Matija Gubec, Louis of Nassau, Infanta Maria of Guimarães, Giovanni Battista Guarini, Hōjō Ujimasa, and Ashikaga Yoshihide. Among people deceased in 1612, Christopher Clavius ranks 5Before him are Rudolf II, Holy Roman Emperor, Sasaki Kojirō, Vasili IV of Russia, and Giovanni Gabrieli. After him are Vincenzo Gonzaga, Duke of Mantua, Federico Barocci, Henry Frederick, Prince of Wales, Karin Månsdotter, Anne Catherine of Brandenburg, Francesco IV Gonzaga, Duke of Mantua, and Jodocus Hondius.

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In Germany

Among people born in Germany, Christopher Clavius ranks 675 out of 6,142Before him are George, King of Saxony (1832), Gustav Heinemann (1899), Ingeborg of Denmark, Queen of France (1174), Ludwig Stumpfegger (1910), Nikolaus Harnoncourt (1929), and Otto Ernst Remer (1912). After him are Gertrude the Great (1256), Frederick Augustus II of Saxony (1797), Georg Elser (1903), Markus Wolf (1923), Wilhelm Bittrich (1894), and Hermann Müller (1876).


Among mathematicians born in Germany, Christopher Clavius ranks 16Before him are Richard Dedekind (1831), Regiomontanus (1436), Alexander Grothendieck (1928), Friedrich Bessel (1784), Felix Klein (1849), and Carl Gustav Jacob Jacobi (1804). After him are Hermann Weyl (1885), Ferdinand von Lindemann (1852), Robert Aumann (1930), Johannes Trithemius (1462), Ernst Zermelo (1871), and Hermann of Reichenau (1013).