Konstantin Leontiev

American physicist, programmer, speaker, technologist and knowledge curator | Massachusetts Institute of Technology, Harvard University | Houston: January 25

American academic | Amherst College, University of California, San Diego | Ithaca: January 25, 1973 - New York City: December 21, 1942 | Tarleton Gillespie

Gordon E. Moore Medal (2011) | Massachusetts Institute of Technology, University of the Witwatersrand | January 25, 1970 - Warsaw: August 14, 1963 | Doron

Russian scientist | Ural State University | Yekaterinburg: January 25, 1965 - Yekaterinburg: September 23, 2019 | Valery Rabinovich | Yekaterinburg: January

Ukrainian activist, IT-specialist | Kharkiv Polytechnic Institute | Kyiv: January 25, 1965 - Lima: April 20, 1967 | Nataliya Zubar | Kyiv: January 25, 1965

Azerbaijani scientist | Azerbaijan State Oil and Industrial University | Baş Göynük: January 25, 1962 - Paris: June 1, 1501 | Asadova Rana | Baş Göynük

Italian theoretical physicist | International School for Advanced Studies, University of Padua | Padua: January 25, 1961 - Melbourne: December 30, 2024 | Gian

Russian-American mathematician | Moscow State University | January 25, 1959 - January 15, 1965 | Tanya Khovanova | January 25, 1959 - January 15, 1965 | Moscow

Lithuanian philosopher, political scientist | Vismantai: January 25, 1958 - Highland Park: October 5, 1985 | Vytautas Radžvilas (Vytautas Radzvilas)

scientist | Shaki: January 25, 1957 - Baku: April 4, 1982 | Tofiq Yusifov | Shaki: January 25, 1957 - Baku: April 4, 1982

Russian mathematician | The George B. Dantzig Prize (2000), EURO Gold Medal (2016), John von Neumann Theory Prize (2009), Frederick W. Lanchester Prize (2022)

Palestinian chemist | Cairo University, University of Manchester Institute of Science and Technology | Jerusalem: January 25, 1955 - Lucerne: September 5, 1936

Brazilian atmospheric physicist | Institute of Physics, University of São Paulo, University of São Paulo | São Paulo: January 25, 1954 - Chang'an, Tang

American mathematician | Princeton University | New York City: January 25, 1951 - January 1, 1997 | Steven Weintraub | New York City: January 25, 1951 - January 1, 1997

researcher | Soros Prize, Lenin Komsomol Prize, Soros' teacher | Novosibirsk State University | Severodvinsk: January 25, 1951 - May 10, 1997 | Georgy Nevinsky

German physicist (1949–2009) | Fellow of the American Physical Society | Stuttgart: January 25, 1949 - Halle (Saale): November 8, 2009 | Ulrich Gösele

Nobel prize winning British biochemist | Order of Merit, Albert Einstein World Award of Science (2013), Baly Medal (1999), Nobel Prize in Physiology or

Italian electronic engineer | Fellow of the Royal Academy of Engineering, IEEE Fellow | Sapienza University of Rome | January 25, 1948 - Karachi: March 4, 1978

German mathematician and historian of mathematics | Leipzig University | January 25, 1947 - Montreux: September 24, 2004 | Renate Tobies | January 25, 1947

University of Warsaw | January 25, 1947 - March 22, 2025 | Światosław Nowicki (Swiatoslaw Nowicki) | January 25, 1947 - March 22, 2025

archimandrite in Moscow Sretensky monastery, spiritual writer | Moscow Theological Academy, Moscow University's Department of Philosophy, Moscow Theological Seminary

Slovenian academic and politician | Decoration of Merit | University of Ljubljana | Belgrade: January 25, 1941 - Berlin: December 18, 1932 | Spomenka Hribar

Czech scientist and astronomer | Charles University | Prague: January 25, 1940 - Prague: February 28, 2012 | Antonín Vítek (Antonin Vitek) | Prague: January

Indian Physicist | Madras Christian College, University of Madras | Salem: January 25, 1938 - April 18, 2025 | A. P. Balachandran | Salem: January 25, 1938

researcher | Madrid: January 25, 1936 - March 5, 2023 | María Arias Delgado (Maria Arias Delgado) | Madrid: January 25, 1936 - March 5, 2023

Ukrainian female scientist | Excellence in Education of Ukraine Badge, Order of Princess Olga, 3rd class | Faculty of Physics of the Taras Shevchenko National

American mathematician (1935–2018) | Fellow of the American Mathematical Society (2013) | New York University, Brooklyn College | New York: January 25, 1935

Polish philosopher | Grand Prix Gobert (2020), Commandeur des Arts et des Lettres (2005), Honorary doctorate from the University of Geneva (2005), Commander of

Italian writer and philosopher (1933–2005) | Naples: January 25, 1933 - Rome: February 13, 2005 | Aldo Carotenuto | Naples: January 25, 1933 - Rome: February 13, 2005

American electronics and TV engineer (1932-2014) | Progress Medal (SMPTE) (2001), IEEE Fellow | Fu Foundation School of Engineering and Applied Science

Hungarian-American chemical engineer | Torbern Bergman Medal (2003) | Budapest University of Technology and Economics | Szolnok: January 25, 1930 - New Haven

January 25, 1926 - Donetsk: August 10, 2012 | John Clement Hawke | January 25, 1926 - Donetsk: August 10, 2012

Spanish teacher | Complutense University of Madrid | Badajoz: January 25, 1925 - Madrid: October 10, 2023 | Fernando Díaz Esteban (Fernando Diaz Esteban)

American mathematical statistician (1924-1981) | Guggenheim Fellowship (1962), Fellow of the Institute of Mathematical Statistics (1953), Fellow of the

Canadian artist (1923-2004) | Mount Allison University | January 25, 1923 - October 8, 2004 | Kenneth G. Mills | January 25, 1923 - October 8, 2004 | Mount

Soviet and Kazakhstani glaciologist | Zhukov Medal, Order of the Patriotic War 2nd class, Medal "For the Victory over Germany in the Great Patriotic War

January 25, 1921 - January 1, 1926 | Italo Federico Quercia | January 25, 1921 - January 1, 1926

American physicist (1921–2010) | University of California, Los Angeles | Brooklyn: January 25, 1921 - Los Angeles: November 28, 2010 | Samuel T. Cohen

Japanese scientist | Medal with Blue Ribbon | January 25, 1919 - March 7, 2007 | Kazuhiko Aoki | January 25, 1919 - March 7, 2007 | Medal with Blue Ribbon

Russian-Belgian physical chemist (1917-2003) | honorary doctorate from University of Bordeaux-I (1972), honorary doctor of the University of Poitiers (1966)

American physicist (1916-1972) | University of Chicago | Nashville: January 25, 1916 - Albuquerque: January 6, 1972 | Elizabeth Riddle Graves | Nashville

Italian philosopher and linguist (1914–1997) | University of Milan | Montecchio Maggiore: January 25, 1914 - Milan: December 2, 1997 | Silvio Ceccato

Polish writer, philosopher and filmmaker (1910–1988) | Warsaw University of Technology, University of Warsaw | Płock: January 25, 1910 - London: September 6, 1988

Soviet Armenian biochemist (1907-1966) | Order of the Red Banner of Labour, Order of the Badge of Honour, Stalin Prize, Medal "For the Defence of Moscow"

American mathematician (1905-1995) | Hilbert's fifth problem | Central High School, University of Pennsylvania, University of Texas at Austin, DeWitt Clinton High School

chemist (1903–1971) | Kossuth Prize (1956) | Eötvös Loránd University, Grammar School of Pápa Reformed College | Berhida: January 25, 1903 - Budapest: July 1, 1971

Bolivian writer | Sucre: January 25, 1901 - Rio de Janeiro: November 24, 1990 | Guillermo Francovich - Guillermo Francovich Salazar | Sucre: January 25, 1901

Estonian mathematician (1891–1964) | University of Tartu | Saarepeedi: January 25, 1891 - Kiidjärve: August 28, 1964 | Hermann Jaakson | Saarepeedi: January

Scientist, Educator and Entrepreneur (1884–1962) | Humboldt University of Berlin, Taras Shevchenko National University of Kyiv | Kyiv: January 25, 1884

Polish chemist | Commander of the Order of Polonia Restituta | Lviv: January 25, 1881 - Lviv: July 4, 1941 | Stanisław Pilat (Stanislaw Pilat) | Lviv: January

19th and 20th-century German missionary, linguist, and social worker | University of Strasbourg | Berlin: January 25, 1879 - Zurich: June 1, 1957 | Helene

Swedish American electrical engineer (1878–1975) | Cedergren Medal (1944), Edison Medal (1944), IEEE Medal of Honor (1919), National Inventors Hall of Fame

Swedish mathematician (1870-1924) | Koch snowflake | Norra Real, Stockholm University, Uppsala University | Svea livgardes church parish: January 25, 1870

American chemist | Lexington: January 25, 1864 - Lexington: September 24, 1916 | Joseph Hoeing Kastle | Lexington: January 25, 1864 - Lexington: September 24, 1916

January 25, 1863 - Kronberg im Taunus: January 14, 1965 | Ivan Trinko | January 25, 1863 - Kronberg im Taunus: January 14, 1965

American writer (1863-1948) | Swarthmore Lecture | Harvard University, Haverford College | South China: January 25, 1863 - Haverford: June 16, 1948 | Rufus

Uruguayan chemist | Pando: January 25, 1860 - Montevideo: January 1, 1950 | Domingo Giribaldo | Pando: January 25, 1860 - Montevideo: January 1, 1950

American educator, writer, inventor | Hunter College | Newtonville: January 25, 1859 - January 1, 1926 | Lillie Eginton Warren | Newtonville: January 25, 1859

German musical instrument maker (1856–1909) | Biebrich: January 25, 1856 - January 13, 1909 | Wilhelm Heckel | Biebrich: January 25, 1856 - January 13, 1909

Danish mathematician | University of Copenhagen | Randers: January 25, 1855 - Copenhagen: January 24, 1935 | Christian Juel - Christian Sophus | Randers

Hungarian mathematician (1855-1913) | Franz Joseph University | Târgu Mureș: January 25, 1855 - Cluj-Napoca: October 13, 1913 | Gyula Vályi (Gyula Valyi)

professor of engineering (1854–1924) | Technical University of Munich, Technical University of Darmstadt, Leipzig University | Groß-Umstadt: January 25

US engineer, inventor and author (1850-1941) | January 25, 1850 - January 1, 1941 | Robert Grimshaw | January 25, 1850 - January 1, 1941

Dr. phil. Westfälische Wilhelms-Universität Münster 1881 | University of Münster | Brandenburg an der Havel: January 25, 1846 - January 1, 1922 | Paul

Imperial Moscow University, Medical faculty of Moscow University | January 25, 1846 - Saint Petersburg: March 27, 2012 | Aleksey Pospelov | January 25, 1846

German mathematician (1843-1921) | honorary doctor of ETH Zürich | Cauchy–Schwarz inequality, symmetry of second derivatives | Humboldt University of

German philosopher (1840-1912) | Reichenau: January 25, 1840 - Münster: July 18, 1912 | Gideon Spicker | Reichenau: January 25, 1840 - Münster: July 18, 1912

America chemist and inventor | Savannah Medical College, Oglethorpe University | Darien: January 25, 1834 - October 31, 1906 | Nathaniel Alpheus Pratt

Hungarian mathematician, geodesist, geophysicist (1818–1905) | Miskolc: January 25, 1818 - Budapest: July 2, 1905 | István Kruspér (Istvan Krusper)

American scientist (1812–1868) | National Inventors Hall of Fame (2006), Fellow of the American Academy of Arts and Sciences | Harvard College, Harvard Medical School

Dutch mathematician and physicist | January 25, 1805 - January 15, 1882 | Franciscus Johannes Stamkart | January 25, 1805 - January 15, 1882

Hungarian politician, mathematician (1798-1853) | Bethlen College, Aiud | Ocna Sibiului: January 25, 1798 - Târgu Mureș: October 25, 1853 | Károly Szász

Swiss chemist (1796-1867) | Bern: January 25, 1796 - Bern: March 22, 1867 | Carl Brunner | Bern: January 25, 1796 - Bern: March 22, 1867

French chemist, naturalist, physician, physiologist, attorney, and socialist politician (1794-1878) | Knight of the Legion of Honour (1831) | Carpentras

Russian inventor | Order of Saint Anna, 2nd class, Pour le Mérite, Order of Saint Anna, Order of St. Vladimir, Order of St. Vladimir, 4th class | Kherson

French writer (1746–1830) | L’Amant anonyme, La Femme auteur, The Theatre of Education | Issy-l'Évêque: January 25, 1746 - Paris: December 31, 1830

German philosopher (1743-1819) | Düsseldorf: January 25, 1743 - Munich: March 10, 1819 | Friedrich Heinrich Jacobi | Düsseldorf: January 25, 1743 - Munich

Mathematician and astronomer (1736–1813) | Fellow of the Royal Society (1791), Knight Grand Cross of the Order of the Reunion (1813), 72 names on the Eiffel

Anglo-Irish natural philosopher, chemist, physicist, and inventor | Fellow of the Royal Society (1660) | The Sceptical Chymist, Boyle's law, New Experiments

Italian philosopher (1520-1604) | Siena: January 25, 1520 - Siena: January 1, 1604 | Francesco Piccolomini (Unico | Malinconico | Stefano Tiepolo | Stephanus Theupolus)

German mathematician, astronomer, cartographer & publisher (1477–1547) | Schöner terrestrial globe, 1515 | Karlstadt am Main: January 25, 1477 - Free