Alphonse Demoulin

Brazilian mathematician | University of São Paulo | September 20, 1985 - Tempe: March 22, 2020 | Jaqueline Godoy Mesquita | September 20, 1985 - Tempe: March 22, 2020

Mexican physicist and astrobiologist | Medalla Hermila Galindo | National Autonomous University of Mexico, Autonomous University of San Luis Potosí | Mexico

Hungarian philosopher and historian | Budapest: September 20, 1964 - London: November 1, 1615 | Miklós Szalai (Miklos Szalai) | Budapest: September 20, 1964

Bulgarian politician | Sofia University | Sofia: September 20, 1964 - New Orleans: September 30, 1843 | Neno Dimov | Sofia: September 20, 1964 - New Orleans

American philosopher | Trinity International University, Marquette University, Columbia International University | Cleveland: September 20, 1962 - Wrzeszcz

British theoretical physicist, author and broadcaster | Fellow of the Royal Society (2018), Stephen Hawking Medal For Science Communication (2016), IET Kelvin

Catalan Physicist | National Research Award- Catalonia (2016), Spanish National Team of Science (2017), Saint George's Cross (2022), Salvà and Campillo award

Peruvian chemist | Pontifical Catholic University of Peru | Lima: September 20, 1960 - May 16, 2021 | Miguel Chong | Lima: September 20, 1960 - May 16, 2021

Italian writer and philosopher | Rome: September 20, 1959 - Bologna: March 28, 1977 | Felice Cimatti | Rome: September 20, 1959 - Bologna: March 28, 1977

physicist and professor | University of Helsinki | September 20, 1957 - April 12, 2016 | Ritva Serimaa | September 20, 1957 - April 12, 2016 | University of Helsinki

Dutch physicist | Spinoza Prize (2009) | University of Twente | Zaandam: September 20, 1957 - Munich: July 5, 2010 | Albert van den Berg | Zaandam: September

Soviet mathematician | National University of Kharkiv | Kharkiv: September 20, 1957 - Edinburgh: December 5, 1770 | Leonid Berlyand | Kharkiv: September 20

Australian mathematician | Hector Medal (2011), James Cook Research Fellowship (2007), ACM Fellow (2007), Fellow of the Royal Society Te Apārangi (1996)

Russian mathematician | Moscow State University | Chertkovo: September 20, 1956 - January 1, 1922 | Aleksey Davydov | Chertkovo: September 20, 1956 - January 1, 1922

American computer scientist and mathematician (born 1956) | ACM Distinguished Service Award (2020), Fellow of the American Mathematical Society (2013), Fellow

German philosopher | University of Marburg, University of Konstanz | Ludwigshafen: September 20, 1954 - Hanover: August 22, 1906 | Martin Seel | Ludwigshafen

German computer scientist and professor | Gottfried Wilhelm Leibniz Prize (1992) | Bielefeld University | Bielefeld: September 20, 1954 - March 19, 2022

Hungarian mathematician | Budapest: September 20, 1953 - November 29, 1911 | Zsolt Tuza | Budapest: September 20, 1953 - November 29, 1911

Romanian philosopher | Oradea: September 20, 1952 - April 7, 2023 | István Király (Istvan Kiraly) | Oradea: September 20, 1952 - April 7, 2023

scientist | Instituto de Geofísica, National Autonomous University of Mexico | Culiacán: September 20, 1952 - Minnesota: May 24, 1933 | María Aurora

Croatian philologist | Zagreb: September 20, 1952 - April 8, 2003 | Mislav Ježić (Mislav Jezic) | Zagreb: September 20, 1952 - April 8, 2003

American scientist | University of California, Davis | Las Vegas: September 20, 1952 - Los Angeles: April 9, 1953 | John C. Priscu | Las Vegas: September 20

Indian nuclear scientist (1952-2020) | Padma Shri in science & engineering (2014) | Ballygunge Government High School, University of Mumbai | Muzaffarpur

Faroese composer and choir leader | Klaksvík: September 20, 1952 - January 4, 2019 | Ólavur Jøkladal (Olavur Jokladal) | Klaksvík: September 20, 1952

Slovene poet and philosopher | Ljubljana: September 20, 1950 - London: March 29, 1772 | Janez Strehovec | Ljubljana: September 20, 1950 - London: March 29, 1772

French philosopher | Saint-Maur-des-Fossés: September 20, 1949 - Nuremberg: August 31, 1856 | Christian Godin | Saint-Maur-des-Fossés: September 20, 1949

American mathematician | University of Miami, University of Wisconsin–Madison, University of California, Los Angeles | San Diego: September 20, 1949 - Paris

American artist (b. 1948) | Guggenheim Fellowship (1989), CAA Award for Distinction (2012), Golden Lion (2015), Women's Caucus for Art Lifetime Achievement Award (2014)

Norwegian physicist and professor | September 20, 1947 - Warsaw: June 18, 1954 | Kjell Hugo Bendiksen | September 20, 1947 - Warsaw: June 18, 1954

Indian spiritual leader | Indian Institute of Technology Madras, Illinois Institute of Technology | Delhi: September 20, 1946 - August 14, 2023 | Rajinder

Russian scientist | Medal of the Order "For Merit to the Fatherland", 2nd class | Perm State University | Chusovoy: September 20, 1946 - Moscow: April 13, 2005

Catalan researcher | University of Barcelona | Mexico City: September 20, 1946 - Oxford: September 18, 1924 | Àngel Messeguer i Peypoch (Angel Messeguer i

American mathematician | Fellow of the Society for Industrial and Applied Mathematics (2010), Member of the National Academy of Sciences of the United States

Czech politician | Military Academy in Brno, Charles University | Bukovina u Čisté: September 20, 1942 - Prague: February 3, 2010 | Václav Exner (Vaclav

American philosopher | Abbot Payson Usher Prize (1974) | Fordham University, W. W. Samuell High School, University of Colorado | September 20, 1941 - Nelson

Dutch–Australian geophysicist | Officer of the Order of Australia (2009), Wollaston Medal (2013), Alfred Wegener Medal (1997), Fellow of the Royal Society of

Italian historian (1938-2015) | Varese: September 20, 1938 - Varese: May 30, 2015 | Luigi Zanzi | Varese: September 20, 1938 - Varese: May 30, 2015

German mathematician | Technische Universität Berlin | Poznań: September 20, 1936 - Philadelphia: August 25, 1904 | Wolfgang Wendland | Poznań: September

Swiss mathematician, physicist and diver | Winterthur: September 20, 1934 - Niederglatt: December 1, 2022 | Hannes Keller | Winterthur: September 20, 1934

Polish mathematician | University of Wrocław | Poland: September 20, 1932 - Wrocław: June 19, 2015 | Witold Kazimierz Roter | Poland: September 20, 1932

physicist-theorist | State Prize of Ukraine in Science and Technology | National University of Kharkiv | September 20, 1931 - January 1, 2020 | Valentin G

Georgian astrophysicist | Order of Vakhtang Gorgasali, 3rd class, State Prize of Georgia | Tbilisi State University, MSU Faculty of Physics | Tbilisi

Polish historian (1928-1998) | Officer of the Order of Polonia Restituta, Medal of the National Education Commission, Commander with Star of the Order of

American philosopher (1927-2019) | University of California, Los Angeles | Berlin: September 20, 1927 - Arlington: May 4, 2019 | Ruth Anna Putnam | Berlin

Soviet and Russian engineer and artillery scientist | Order of the Red Banner, Jubilee Medal "65 Years of Victory in the Great Patriotic War 1941–1945"

Romanian mathematician | Pitești: September 20, 1919 - Bucharest: March 10, 1987 | Gheorghe D. Marinescu | Pitești: September 20, 1919 - Bucharest: March 10, 1987

scientist | Order of the Patriotic War | Biysk: September 20, 1919 - Israel: July 30, 2004 | Lev Samoĭlovich I︠A︡vich (Lev Samoilovich IAvich) | Biysk

Swedish social and family historian (1917-2009) | Lund University | Malmö: September 20, 1917 - Säve parish: October 3, 2009 | Olga Dahl | Malmö: September

French writer (1916–1998) | Ontologie du secret | lycée du Parc, École Normale Supérieure | Saint-Étienne: September 20, 1916 - Saint-Germain-en-Laye

American mathematician | Fellow of the Royal Society of Canada, Fellow of the American Mathematical Society (2013), honorary degree from Spelman College (1999)

Swiss physicist (1914-1974) | University of Minnesota, ETH Zurich | Lucerne: September 20, 1914 - Geneva: August 30, 1974 | Josef-Maria Jauch | Lucerne

Israeli mathematician | Lviv University | Polonne: September 20, 1913 - January 11, 1996 | David Mejzler | Polonne: September 20, 1913 - January 11, 1996

Dutch dilettant, 1912–1960 | Steenwijkerwold: September 20, 1912 - Meppel: July 27, 1960 | Johannes Wardenier. Jo | Steenwijkerwold: September 20, 1912

Indian Social Reformer (1911-1990) | Agra district: September 20, 1911 - June 2, 1990 | Shriram Sharma | Agra district: September 20, 1911 - June 2, 1990

German physicist (1910-1987) | National Prize of East Germany | Querfurt: September 20, 1910 - Leipzig: August 11, 1987 | Walter Herrmann | Querfurt: September

African-American mathematician | Wilberforce University | Kansas City: September 20, 1910 - Hampton: November 10, 2008 | Dorothy Vaughan | Kansas City

pharmacologist in Japan | Tokyo Imperial University | Kyoto Prefecture: September 20, 1909 - June 26, 1988 | Shōjirō Ueo (Shojiro Ueo) | Kyoto Prefecture

scientist | University of California, Berkeley, University of Minnesota | Cloquet: September 20, 1909 - Bethesda: February 15, 1999 | Clarence Larson

Spanish historian (1903-1978) | L'Armentera: September 20, 1903 - Figueres: December 27, 1978 | Alexandre Deulofeu | L'Armentera: September 20, 1903

Dutch theologian who became the first secretary general of the World Council of Churches in 1948 and held this position until his retirement in 1966 | Great

History of Political Philosophy scholar (1899-1973) | Commander's Cross of the Order of Merit of the Federal Republic of Germany (1965), honorary doctor of the

scientist | September 20, 1893 - Moscow: March 7, 1929 | Oleg Pletner | September 20, 1893 - Moscow: March 7, 1929

September 20, 1890 - Copenhagen: December 17, 1947 | France Veber | September 20, 1890 - Copenhagen: December 17, 1947

German mathematician (1887–1947) | Ackermann–Teubner Memorial Award (1938) | Iwahori–Hecke algebra, Hecke operator, Hecke character, affine Hecke

Japanese inventor (1882-1972) | Medal with Blue Ribbon | September 20, 1882 - December 26, 1972 | Kyota Sugimoto | September 20, 1882 - December 26, 1972

painter (1865-1928) | Warsaw: September 20, 1865 - Warsaw: March 30, 1928 | Feliks Jabłczyński (Feliks Jablczynski) | Warsaw: September 20, 1865 - Warsaw

American mathematician (1861–1926) | Harvard University | Ashland: September 20, 1861 - New York City: May 26, 1926 | Frank Nelson Cole | Ashland: September

Italian mathematician and mathematical physicist (1860-1955) | Mathematical Prize of the Italian Academy of Sciences (1894) | Scuola Normale Superiore | Como

German botanist and chemist (1858-1935) | Freiburg/Elbe: September 20, 1858 - Hanover: January 11, 1935 | Carl Friedrich Wilhelm Wehmer | Freiburg/Elbe

September 20, 1850 - Moscow: January 18, 1923 | Mihael Napotnik | September 20, 1850 - Moscow: January 18, 1923

German inventor (1848–1919) | Iserlohn: September 20, 1848 - Bonn: July 2, 1919 | Friedrich Soennecken | Iserlohn: September 20, 1848 - Bonn: July 2, 1919

Czech banker and mathematician (1842-1910) | University of Vienna, Charles University | Borovnice: September 20, 1842 - New Town: December 6, 1910 | Gabriel

Scottish chemist and physicist (1842–1923) | Hodgkins Medal (1899), Lavoisier Medal (1904), Fellow of the Royal Society (1877), Bakerian Lecture (1901)

German mathematician (1842–1935) | University of Giessen | Darmstadt: September 20, 1842 - Tübingen: June 8, 1935 | Alexander von Brill | Darmstadt

Swiss chemist (1840-1933) | Heidelberg University | Lausanne: September 20, 1840 - Lausanne: April 10, 1933 | Jules Piccard | Lausanne: September 20, 1840

Japanese politician (1830-1859) | Ryūkonroku | Hagi: September 20, 1830 - Tenma-chō Prison: November 21, 1859 | Yoshida Shōin - 矩方 (Yoshida Shoin

Austrian inventor and joiner (1822–1893) | Partschins: September 20, 1822 - Partschins: August 27, 1893 | Peter Mitterhofer | Partschins: September 20, 1822

Dutch jurist and philosopher | Leiden University | Rotterdam: September 20, 1821 - Oosterbeek: August 22, 1892 | Cornelis Willem Opzoomer | Rotterdam

Moscow Imperial University, Faculty of Law | September 20, 1820 - Leipzig: March 20, 1726 | Pavel Aleksandrovich Bakunin | September 20, 1820 - Leipzig

Polish physicist (1820-1887) | Imperial St. Petersburg University | Warsaw: September 20, 1820 - Vienna: November 30, 1887 | Stanisław Przystański (Stanislaw

American engineer & inventor (1819-1895) | National Inventors Hall of Fame (2007) | Gloucester County: September 20, 1819 - March 8, 1895 | Frederick Ellsworth

American inventor (1813–1839) | Pelham: September 20, 1813 - November 13, 1839 | William Otis | Pelham: September 20, 1813 - November 13, 1839

Scottish chemist, geologist, industrialist and inventor | Fellow of the Royal Society | Royal High School, University of Edinburgh | Edinburgh: September 20

Italian physician, physicist and geologist | San Cipriano d'Aversa: September 20, 1702 - Naples: August 5, 1783 | Francesco Serao | San Cipriano d'Aversa

Italian mathematician, astronomer and poet (1674–1739) | University of Bologna | Bologna: September 20, 1674 - Bologna: February 15, 1739 | Eustachio

German physician (1621-1698) | Fürstenwalde: September 20, 1621 - April 20, 1698 | Moritz Hoffmann | Fürstenwalde: September 20, 1621 - April 20, 1698

Polish renaissance scholar (1503-1572) | Jagiellonian University | Wolbórz: September 20, 1503 - Wolbórz: January 1, 1572 | Andrzej Frycz Modrzewski