Armenian mathematician | December 9, 1987 - Zurich: July 7, 1896 | Hayk Sedrakyan | December 9, 1987 - Zurich: July 7, 1896

scientist | Bene Merito | December 9, 1978 - Boston: January 16, 1967 | Boris Gerus | December 9, 1978 - Boston: January 16, 1967 | Bene Merito

1977–) opera singer and physicist | Hungarian Golden Cross (2020) | University of Szeged, Franz Liszt Academy of Music | Szeged: December 9, 1977

Finnish poet, novelist, essayist and lawyer | Kalevi Jäntti Award (2006), Order of the Cross of Terra Mariana, 4th Class (2014) | University of Helsinki

French academic and mathematician | Adams Prize (2009), Élie Cartan Prize (2009), Whitehead Prize (2006), Fellow of the American Mathematical Society (2013)

American TV personality and entrepreneur | Entrepreneur of the Year (2017) | Loyola University Chicago | Chicago: December 9, 1969 - Geneva: March 3, 1984

German chemist | University of Bonn | Bad Godesberg: December 9, 1966 - Senigallia: May 18, 1766 | Barbara Albert | Bad Godesberg: December 9, 1966

chemist | Clarivate Citation Laureates (2020) | Seoul National University, Dukwon High School, University of Illinois Urbana–Champaign | Daegu: December 9

British linguist | University of Oxford | December 9, 1963 - Warsaw: September 17, 1929 | Katarzyna Jaszczolt | December 9, 1963 - Warsaw: September 17, 1929

Russian scientist | I.M. Sechenov First Moscow State Medical University, Kaptsov Gymnasium № 1520 | Moscow: December 9, 1962 - March 22, 1999 | Andrey

Latvian politician | სამი ვარსკვლავის ორდენი, მე-3 კლასი | University of Latvia, Riga State Gymnasium No.1

December 9, 1956 - 4th arrondissement of Paris: October 17, 1983 | Lars Morell | December 9, 1956 - 4th arrondissement of Paris: October 17, 1983

British physicist | Fellow of the Royal Academy of Engineering (2019), Fellow of the American Physical Society, David Adler Lectureship Award in the Field of

American chemist | Perkin Medal (2001), Society of Women Engineers Achievement Award (1993) | Syracuse University | Melbourne: December 9, 1953 - May 3, 1976

German mathematician | Bielefeld University | Hildesheim: December 9, 1951 - Manaslu: September 23, 2012 | Gunter Dueck | Hildesheim: December 9, 1951

French philosopher | Jean Moulin University - Lyon 3 | Givors: December 9, 1951 - August 19, 1635 | Daniel Parrochia | Givors: December 9, 1951 - August 19, 1635

Brazilian political philosopher | National Order of Scientific Merit, Prêmio Jabuti (2001) | University of São Paulo | Araraquara: December 9, 1949

American academic administrator (1947-2021) | Charles Lathrop Parsons Award (2005), National Medal of Science (2009), doctor honoris causa from the Pierre and

German priest | Bavarian Order of Merit, Cross of the Order of Merit of the Federal Republic of Germany, Knight in the Order of the Holy Sepulchre | Augsburg

1946–) Hungarian inventor | Budapest University of Technology and Economics | Miskolc: December 9, 1946 - Zurich: January 12, 1956 | István Zoltán (Istvan

Hungarian chemist | International Dennis Gabor Award (2009), Széchenyi Prize (2014), Raphael Eduard Liesegang Prize (2000) | Szeged: December 9, 1946

science author and distinguished professor University of Manitoba | Fellow of the Royal Society of Canada | The Earth's Biosphere: Evolution, Dynamics, and

Basque writer (1942-2021) | Order of Constitutional Merit (2003) | Sorbonne, University of the Basque Country | Donostia-San Sebastián: December 9, 1942

Italian philosopher | University of Padua | Adria: December 9, 1942 - Holyoke: December 15, 1888 | Armando Girotti | Adria: December 9, 1942 - Holyoke: December 15, 1888

historian | Copenhagen: December 9, 1941 - Ensenada: November 8, 2021 | Kirsti Andersen | Copenhagen: December 9, 1941 - Ensenada: November 8, 2021

Indian pontiff | December 9, 1940 - Mangaluru: September 6, 2020 | Kesavananda Bharati | December 9, 1940 - Mangaluru: September 6, 2020

Ph.D. Kiev State University 1968 | Faculty of Mechanics and Mathematics, Taras Shevchenko National University of Kyiv | Luhyny Raion: December 9, 1938

Estonian philosopher | University of Tartu | Pärnu: December 9, 1938 - Tammiste: July 18, 2015 | Rein Vihalemm | Pärnu: December 9, 1938 - Tammiste: July 18, 2015

Georgian mathematician | Tbilisi State University | Tbilisi: December 9, 1937 - Tbilisi: March 18, 2015 | David Gordeziani | Tbilisi: December 9, 1937

Soviet and Russian epidemiologist (1937-2020) | Badge "Excellence in Healthcare of the USSR", Order of the Badge of Honour, Russian government prize for

American professor of Philosophy at Stanford University (1932–2013) | Jean Nicod Prize (1994), Lauener Prize (2014) | University of Minnesota | Waukegan

Estonian engineer and inventor | Orekhovo-Zuyevo: December 9, 1931 - Tallinn: November 21, 2006 | Mikhail Gammerman | Orekhovo-Zuyevo: December 9, 1931

American mathematician (1927–2020) | National Book Award (1983) | New York University, Harvard University, Courant Institute of Mathematical Sciences, NYU

American particle physicist who won the Nobel Prize in Physics | Leo Szilard Lectureship Award (1981), Nobel Prize in Physics (1990), Fellow of the American

Czech anthropologist, philosopher and sociologist | Fellow of the British Academy | Balliol College, St Albans School | Montrouge: December 9, 1925 - Prague

Italian philosopher (1924-2014) | University of Catania | Lentini: December 9, 1924 - Catania: March 6, 2014 | Manlio Sgalambro | Lentini: December 9, 1924

German journalist and philosopher (1923–1995) | Heinrich Mann Prize (1953) | Humboldt University of Berlin | Königsberg: December 9, 1923 - Berlin: March 15, 1995

Canadian chemist (1920-2006) | Chemical Institute of Canada Medal (1983), Prix Marie-Victorin (1982), Officer of the Order of Canada (1995), Léo-Pariseau

Nobel Prize-winning American inorganic and organic chemist | Remsen Award (1976), Centenary Prize (1971), Peter Debye Award in Physical Chemistry (1973)

American nurse | Living Legend of the American Academy of Nursing (2000) | San Diego State University, Oregon State University, University of California, San Francisco

American physicist | IEEE Fellow, Fellow of the American Physical Society, Ernest Orlando Lawrence Award (1963), Nobel Prize in Physics (1975) | Columbia

German mathematician (1907-1984) | Deuring–Heilbronn phenomenon | University of Göttingen, Sapienza University of Rome | Göttingen: December 9, 1907

American computer scientist and United States Navy officer (1906–1992) | World War II Victory Medal, Legion of Merit, Meritorious Service Medal, Defense

German mathematician, best known for two theorems (1905-1980) | Sperner's lemma, Sperner family, Sperner's theorem, Sperner property of a partially ordered set

mathematician (1902–1990) | University of Göttingen, University of Bonn | Göttingen: December 9, 1902 - Adelaide: June 26, 1990 | Hans Schwerdtfeger - Hans

British biochemist, historian and sinologist (1900–1995) | Prix Stanislas Julien (1973), honorary doctor of the Chinese Academy of Social Sciences (1983)

sociologist, opinion journalist and university teacher (1900-1988) | Faculty of Arts, Charles University in Prague | Bački Petrovac: December 9, 1900

engineer and inventor | IRI Medal (1948), National Inventors Hall of Fame (2006) | Purdue University | Argos: December 9, 1896 - October 15, 1964 | Games

German physicist and cyberneticist (1894–1968) | University of Göttingen | Hanau: December 9, 1894 - Berlin: May 31, 1968 | Hermann Schmidt | Hanau

chemist and educator (1894-1976) | University of Minnesota, University of California, Berkeley | Minnesota: December 9, 1894 - San Jose: February 14, 1976

American inventor (1886–1956) | National Inventors Hall of Fame (2005) | Amherst College, Montclair High School | Brooklyn: December 9, 1886 - Manhattan

Chinese philosopher (1886-1973) | Toyo University, University of Tokyo | Hangzhou: December 9, 1886 - Beijing: June 2, 1973 | Zhang Dongsun | Hangzhou

Russian mathematician (1883–1950) | Order of the Red Banner of Labour | Henstock–Kurzweil integral, Luzin N property, Lusin's theorem, Luzin space

Portuguese physicist (1868–1933) | Saint Peter and Paul Seminair | Cendufe: December 9, 1868 - Viana do Castelo: December 21, 1933 | Manuel António Gomes

German chemist and receiver of the Nobel prize (1868–1934) | Harnack medal (1926), Nobel Prize in Chemistry (1918), Liebig Medal (1914), Rumford Medal

Russian chemist (1867-1935) | Order of Saint Stanislaus, 3rd class, Order of Saint Stanislaus, 2nd class | Faculty of Physics and Mathematics of Moscow

American bacteriologist | George M. Kober Lectureship (1931) | University of Michigan Medical School, University of Michigan | Chicago: December 9, 1864 - Ann

German physician and professor | Martin Luther University Halle-Wittenberg | Świecie: December 9, 1851 - October 26, 1923 | Leo Grunmach | Świecie: December

Russian chemist (1849-1903) | Kazan Federal University | Kazan: December 9, 1849 - Warsaw: November 27, 1903 | Yegor Wagner | Kazan: December 9, 1849 - Warsaw

German chemist (1848–1899) | Knight Fourth Class of the Order of St Michael of Merit (1892) | Technical University of Munich, Ludwig-Maximilian-University in

Russian revolutionary socialist and philosopher (1842–1921) | Mutual Aid: A Factor of Evolution, Fields, Factories, and Workshops, The Conquest of Bread, The

mathematician from Germany | Martin Luther University Halle-Wittenberg, Leipzig University | Dresden: December 9, 1839 - Venice: November 21, 1866 | Gustav

Australian engineer and technical education advocate (1839-1911) | Teddington: December 9, 1839 - Sydney: October 15, 1911 | Norman Selfe | Teddington

German philosopher (1828-1888) | Stadt Blankenberg: December 9, 1828 - Chicago: April 15, 1888 | Joseph Dietzgen | Stadt Blankenberg: December 9, 1828

Prussian mathematician (1817-1892) | Königsberg: December 9, 1817 - Königsberg: April 21, 1892 | Ernst Robert Jänsch (Ernst Robert Jansch) | Königsberg

German chemist (1811-1889) | Nüstenbach: December 9, 1811 - Vienna: December 6, 1889 | Wilhelm Stein | Nüstenbach: December 9, 1811 - Vienna: December 6, 1889

French bishop and physicist | Meyrin: December 9, 1789 - Annecy: August 28, 1859 | Louis Rendu | Meyrin: December 9, 1789 - Annecy: August 28, 1859

French printer and self-taught mathematician | Asnières: December 9, 1761 - Rouen: December 16, 1836 | Pierre Périaux (Pierre Periaux) | Asnières: December

French chemist (1748-1822) | Fellow of the Royal Society, Knight Grand Cross of the Order of the Reunion, Fellow of the American Academy of Arts and Sciences

Swedish German chemist who discovered oxygen | Uppsala University | Stralsund: December 9, 1742 - Köping: May 21, 1786 | Carl Wilhelm Scheele | Stralsund

Swedish poet | Stockholm: December 9, 1718 - Skoklosters: June 29, 1763 | Hedvig Charlotta Nordenflycht | Stockholm: December 9, 1718 - Skoklosters: June 29, 1763

theologian, historian, mathematician (1667-1752) | Landau Forte Academy QEMS, Clare College, University of Cambridge | Norton Juxta Twycross: December 9, 1667