Swedish writer | Stockholm University | October 20, 1983 - Moffat: August 29, 1981 | Helena Granström (Helena Granstrom) | October 20, 1983 - Moffat: August 29, 1981

Polish philosopher, opinion journalist | Bard College Berlin, Boston University, University of Warsaw | October 20, 1979 - Branford: October 9, 2018 | Karolina

Russian historian of science | October 20, 1975 - Santiago de Querétaro: September 4, 1971 | Roman Fando | October 20, 1975 - Santiago de Querétaro: September 4, 1971

American mathematician | Leonard Eisenbud Prize for Mathematics and Physics (2023), Clay Research Award (2017), Rollo Davidson Prize (2006), Loève Prize

Romanian journalist | Bucharest: October 20, 1972 - December 11, 2020 | Andi Moisescu | Bucharest: October 20, 1972 - December 11, 2020

Serbian politician | Chemistry Faculty, University of Belgrade, Florida State University | Belgrade: October 20, 1971 - Rome: February 13, 2005 | Aleksandar

Macedonian academic, author and philosopher | Skopje: October 20, 1969 - Moscow: January 25, 2000 | Katerina Kolozova | Skopje: October 20, 1969 - Moscow

October 20, 1968 - Tehran: November 25, 1966 | Franci Gabrovšek (Franci Gabrovsek) | October 20, 1968 - Tehran: November 25, 1966

American mathematician | Oswald Veblen Prize in Geometry (2007), Guggenheim Fellowship (2008) | Princeton University | Dallas: October 20, 1967 - Naples: October 9, 1881

German mathematician | Fellow of the Society for Industrial and Applied Mathematics (2020), Gottfried Wilhelm Leibniz Prize (2012), International Giovanni

Japanese scientist | Hideo Kobayashi Sho (2005) | Faculty of Science, the University of Tokyo, Faculty of Law, The University of Tokyo, Tokyo Gakugei

Azerbaijani scientist | Western Caspian University | Qaracallı: October 20, 1959 - January 1, 1990 | Elman Yusifov | Qaracallı: October 20, 1959 - January 1, 1990

Swiss environmental chemist and researcher | ETH Zurich | Baden: October 20, 1959 - Orleans: March 29, 1980 | Urs von Gunten | Baden: October 20, 1959

Spanish university teacher, philosopher and researcher | honorary doctorate of the University of Montpellier (2024) | University of Barcelona | Barcelona

German philosopher | Bonn: October 20, 1958 - Pisa: March 28, 2020 | Bernd Gräfrath (Bernd Grafrath) | Bonn: October 20, 1958 - Pisa: March 28, 2020

Israeli linguist, philosopher and poet | Carnot Lyceum of Tunis, University of Strasbourg, School for Advanced Studies in the Social Sciences | Tunis: October

German statistician | Fellow of the Institute of Mathematical Statistics (1992) | Heidelberg University | Darmstadt: October 20, 1953 - Kraków: April 16, 1888

American theoretical high-energy physicist | John Wheatley Award (2025), Fellow of the American Association for the Advancement of Science (2015), Philip Hauge

Indian chemist | October 20, 1949 - April 23, 2024 | V. N. Rajasekharan Pillai | October 20, 1949 - April 23, 2024

French mathematician (1947–2021) | Stefan Bergman Prize (2017) | Marrakesh: October 20, 1947 - City of Brussels: October 30, 2021 | Nessim Sibony

Belgian chemist | Ghent University | Kortrijk: October 20, 1946 - Worthing: February 9, 1924 | Patrick Sandra | Kortrijk: October 20, 1946 - Worthing: February 9, 1924

Colombian chemist | National University of Colombia | Bogotá: October 20, 1946 - Wołów: April 20, 1821 | Moisés Wasserman (Moises Wasserman) | Bogotá

Sri Lankan philosopher (1944–2024) | University of Ceylon, Royal College, Colombo | Panadura: October 20, 1944 - May 2, 2024 | Nalin de Silva | Panadura

German mathematician (1942-2016) | University of Göttingen | Wernigerode: October 20, 1942 - December 30, 2016 | Wolf Barth | Wernigerode: October 20, 1942

Moldovan actress | Moldova State University | Cuhureștii de Sus: October 20, 1942 - October 28, 2021 | Maria Sagaidac | Cuhureștii de Sus: October 20, 1942

American mathematician | University of California, Berkeley | October 20, 1942 - September 19, 2012 | Richard Laver | October 20, 1942 - September 19, 2012

Russian librarian | Medal of the Order "For Merit to the Fatherland", 2nd class, Merited worker of culture of the Russian Federation, Medal "In Commemoration

Ukrainian chemist | Order of Merit (Ukraine), 3rd class, Prize of Cabinet of Ministers of Ukraine for development and implementation of innovative

American mathematician | Fellow of the American Mathematical Society (2016), honorary doctor of University of Szeged (2019) | University of Colorado Boulder

Italian sociologist (1941-) | Grand Officer of the Order of Merit of the Italian Republic | Università Cattolica del Sacro Cuore | Milan: October 20, 1941

Soviet and Russian general and military scientist | Jubilee Medal "40 Years of the Armed Forces of the USSR", Jubilee Medal "In Commemoration of the 100th

Israeli philosopher | Israel Prize (2000) | Hebrew University of Jerusalem, Hebrew Reali School, Princeton University | Haifa: October 20, 1935 - June 10, 2018

Norwegian philosopher, writer and farmer (1934–2014) | University of Oslo | Trondheim: October 20, 1934 - May 27, 2014 | Sigmund Kvaløy Setreng (Sigmund

Fenger Academy High School, University of Illinois Urbana–Champaign | October 20, 1932 - Saint Petersburg: April 26, 1934 | Edward L. Ghidotti | October

Czech chemical engineer and chairman of the Czech Academy of Science | Neuron Prize for Lifelong Contribution to Science (2013), honorary doctor of the Charles

Indian academic (1926-1994) | Osmania University, Nizam College | October 20, 1926 - December 24, 1994 | Kailasa Venkata Ramiah | October 20, 1926 - December 24, 1994

American physicist (1925–1999) | University of Chicago, Townsend Harris High School, Harvard University, Queens College | Far Rockaway: October 20, 1925

Spanish businessman (1923–2003) | Barcelona: October 20, 1923 - Barcelona: December 27, 2003 | Enric Bernat | Barcelona: October 20, 1923 - Barcelona

American businesswoman | Pittcon Heritage Award | Columbia College, Iowa State University | Bucklin: October 20, 1922 - Loveland: June 4, 2020 | Kathryn

Russian philologist | October 20, 1922 - Moscow: January 25, 2012 | Lyubov Pustilnik | October 20, 1922 - Moscow: January 25, 2012

American physicist (1921–2010) | University of Wisconsin–Madison, The Putney School, Bennington College | Chicago: October 20, 1921 - Beijing: June 8, 2010

German physicist (1921-1995) | Patriotic Order of Merit in Bronze, National Prize of East Germany | Leipzig University | Leipzig: October 20, 1921 - Leipzig

American accelerator physicist (1919–2014) | Robert R. Wilson Prize (1998), Fellow of the American Physical Society | Rice University, Massachusetts

American chemist (1919–2008) | Chemical Pioneer Award (1970), National Inventors Hall of Fame (2010), ACS Award for Creative Invention (1972), James C.

Chinese scientist (1919-2015) | Academician of the Chinese Academy of Sciences (1980) | Tsinghua University | Jiangmen: October 20, 1919 - Chengdu: January 23, 2015

Georgian scientist | Moscow State Pedagogical University | Gupi: October 20, 1916 - Sukhumi: September 22, 1995 | Shalva Inal-Ipa | Gupi: October 20, 1916

American cryptographer (1912-2002) | University of Texas at Austin, University of Wisconsin–Madison | Okolona: October 20, 1912 - Chevy Chase: August 9, 2002

german-American loads engineer and Operation Paperclip hire (1911-1992) | Lukavac: October 20, 1911 - February 8, 1992 | William Mrazek | Lukavac: October 20

German born American mathematician (1904–1988) | Wolf Prize in Mathematics (1985), Leroy P. Steele Prize (1979) | University of Göttingen | Wrocław

Order of Lenin, Stalin Prize, Order of the Badge of Honour, Order of the Red Banner of Labour, Medal "For Valiant Labour in the Great Patriotic War 1941–1945"

Japanese chemist (1900–1992) | Person of Cultural Merit (1965), Order of Culture (1965) | Tohoku University | Shizuoka Prefecture: October 20, 1900 - November 3, 1992

Polish philosopher | Faculty of Philosophy of the Jagiellonian University, Theology faculty of the Jagiellonian University | Brody: October 20, 1899 - Saint

Medal "For the Defence of Moscow", Order of the Badge of Honour, Order of the Red Banner of Labour, Order of Lenin, Hero of Socialist Labour, Medal "For the

French anarchist (1895–1978) | Saint-Denis: October 20, 1895 - Saint-Cloud: April 8, 1978 | Gaston Leval - Pierre Robert Piller | Saint-Denis: October 20

Chinese mathematician | Tsinghua University | Mile City: October 20, 1893 - Beijing: February 3, 1969 | Xiong Qinglai | Mile City: October 20, 1893 - Beijing

English physicist (1891-1974), who discovered the neutron in 1932 | Companion of Honour (1970), Faraday Medal (1950), Hughes Medal (1932), Pour le Mérite for

Lithuanian politician (1890-1971) | University of Geneva, Liepāja Gymnasium, University of Freiburg | Liepāja: October 20, 1890 - Kaunas: October 17, 1971

Canadian chemist | University of Illinois Urbana–Champaign, McMaster University | Georgetown: October 20, 1888 - Victoria: December 7, 1966 | Karl Clark

American electrical engineer (1887–1970) | Ripon College, University of Wisconsin–Madison | Ripon: October 20, 1887 - Guildford: August 3, 1783 | Otto

Knight of the Legion of Honour, Order of the Star of the Romanian People's Republic, Order of the Crown | University of Vienna | October 20, 1886 - Belfast

Dutch physicist | University of Groningen | October 20, 1886 - January 26, 1966 | Ekko Oosterhuis | October 20, 1886 - January 26, 1966 | University of Groningen

American mathematician (1881–1974) | Fellow of the American Statistical Association, Fellow of the Institute of Mathematical Statistics (1942), Wilks

October 20, 1866 - January 1, 1997 | Josef Mohn | October 20, 1866 - January 1, 1997

Polish philosopher, psychologist and logician (1866–1938) | Cross of Valour, City of Łódź Award | University of Vienna, Theresianum, Lviv University

MD | Order of Saint Anna, 2nd class, Order of Saint Stanislaus, 3rd class, Order of St. Vladimir, 4th class | Imperial Academy of Medical Surgery

English mathematician (1863–1942) | Honorary doctorate from the University of Geneva (1913), honorary doctorate from the University of Strasbourg (1928)

American philosopher, psychologist, and educational reformer (1859–1952) | doctor honoris causa from the University of Paris (1930), Carus Lectures (1925)

American toy designer (1858-1920) | Westerly: October 20, 1858 - Brooklyn: August 3, 1920 | Jesse Armour Crandall | Westerly: October 20, 1858 - Brooklyn: August 3, 1920

Czech politician, philosopher and physiologist (1857-1942) | Charles University | Hrdějovice: October 20, 1857 - Hluboká nad Vltavou: February 6, 1942

Slovene mathematician | Železniki: October 20, 1846 - Maribor: March 9, 1915 | Luka Lavtar | Železniki: October 20, 1846 - Maribor: March 9, 1915

Dr. phil. Universität Leipzig 1868 | Leipzig University | Gotha: October 20, 1845 - January 1, 1916 | August Amthor | Gotha: October 20, 1845 - January 1

French chemist (1843-1908) | École Normale Supérieure | Rennes: October 20, 1843 - Paris: November 7, 1908 | Alfred Ditte | Rennes: October 20, 1843 - Paris

mathematician and president of Serbian Royal Academy (1836–1904) | Karlsruhe Institute of Technology | Belgrade: October 20, 1836 - Kingdom of Serbia: May 9, 1904

British physicist | Fellow of the Royal Society | University College London | Sabden: October 20, 1835 - Rickmansworth: February 9, 1919 | Carey Foster

Italian mathematician and astronomer (1830-1915) | Mathematical Prize of the Italian Academy of Sciences (1876), Order of Saints Maurice and Lazarus | Naples

English mathematician | Brighton: October 20, 1827 - January 1, 1884 | Charles Merrifield | Brighton: October 20, 1827 - January 1, 1884

Swedish chemist (1826–1897) | Lund University | Växjö Landsförsamling: October 20, 1826 - Lund Cathedral parish: November 5, 1897 | Christian Wilhelm

American businessman (1819–1892) | Congressional Gold Medal | transatlantic telegraph cable | Stockbridge: October 20, 1819 - Irvington: July 12, 1892

French agronomist and chemist (1819-1884) | Knight of the Legion of Honour | Paris: October 20, 1819 - Talmay: August 8, 1884 | Paul Thénard (Paul Thenard)

Austrian general (1811–1881) | Theresienfeld: October 20, 1811 - Vienna: June 3, 1881 | Franz von Uchatius | Theresienfeld: October 20, 1811 - Vienna: June 3, 1881

Order of Saint Anna, 2nd class, Order of St. Vladimir, 3rd class, Order of Saint Stanislaus, 2nd class, Order of St. Vladimir, 4th class, Order of Saint

Dutch French-language writer and composer (1740-1805) | Zuylen Castle: October 20, 1740 - Colombier: December 27, 1805 | Isabelle de Charrière - Isabella

German mathematician | University of Tübingen | Kirchheim unter Teck: October 20, 1736 - Tübingen: September 27, 1821 | Christoph Friedrich von Pfleiderer

German chemist (1719-1781) | Brunswick: October 20, 1719 - Brunswick: April 14, 1781 | Johann Heinrich Gravenhorst | Brunswick: October 20, 1719 - Brunswick

Japanese philosopher (1681-1758) | Edo: October 20, 1681 - Edo: December 11, 1758 | Hayashi Ryūkō (Hayashi Ryuko) | Edo: October 20, 1681 - Edo: December 11, 1758

University of Jena | October 20, 1553 - 7th arrondissement of Lyon: November 16, 2014 | Zacharias Brendel | October 20, 1553 - 7th arrondissement of Lyon

German physician and botanist (1528-1586) | Johannes Gutenberg University Mainz | Marburg: October 20, 1528 - Frankfurt: May 29, 1586 | Adam Lonitzer