Leonard T. Troland

DW Akademie, Adu Gyamfi Senior High School, Kwame Nkrumah University of Science and Technology | April 26, 1987 - January 1, 1986 | Emmanuel Kwasi Debrah

German archaeologist and chemist | Almaty: April 26, 1982 - Turin: September 19, 2023 | Robert Lehmann | Almaty: April 26, 1982 - Turin: September 19, 2023

Cuban mathematician | Guinness World Records (2015), Guinness World Records (2011), Guinness World Records (2010), Guinness World Records (2009), Guinness

Ukrainian politician | Faculty of Law of Taras Shevchenko National University of Kyiv | Kyiv: April 26, 1978 - Mittweida: January 1, 2004 | Danylo Hetmantsev

French mathematician | Ferran Sunyer i Balaguer Prize (2017) | École Normale Supérieure | April 26, 1971 - Casale Monferrato: November 18, 1918 | Antoine

mathematician | Free University Berlin | Wuppertal: April 26, 1969 - December 1, 2024 | Jörg Neunhäuserer (Jorg Neunhauserer) | Wuppertal: April 26, 1969

Luxembourgish politician | University of Liège | Wiltz: April 26, 1969 - Fort Wayne: February 23, 1999 | Martine Deprez | Wiltz: April 26, 1969 - Fort Wayne

French official and philosopher | Knight of the National Order of Merit (2010) | Sciences Po, École nationale d'administration, École normale supérieure de

German biochemist | Otto Bayer Award (2008), Gottfried Wilhelm Leibniz Prize (2004), Philip Morris Research Prize (2006), Inhoffen-Medaille (2016), Innovation

Spanish politician and councillor | Lycée Français de Barcelone | Barcelona: April 26, 1966 - Beijing: September 28, 1898 | Carles Martí i Jufresa (Carles

chinese-American mathematician | University of Science and Technology of China, University of California, San Diego | Qingdao: April 26, 1965 - Sleman: August 10, 2024

Lithuanian philosopher | Vilnius Academy of Art | Vilnius: April 26, 1962 - Kabeliai: July 25, 2010 | Algis Uždavinys (Algis Uzdavinys) | Vilnius: April 26

Column writer, Kannada language linguistics expert, technology writer, Bengalurian | University of Mysore | April 26, 1959 - 5th arrondissement of Paris: October 2, 1892

Azerbaijani geophysicist | Azerbaijan State Oil and Industrial University | Baku: April 26, 1959 - February 25, 2012 | Elchin Khalilov | Baku: April 26, 1959

philosopher | Katholieke Universiteit Leuven | April 26, 1958 - Philadelphia: January 1, 1897 | Mathew Chandrankunnel | April 26, 1958 - Philadelphia: January 1, 1897

German linguist | Dachau: April 26, 1956 - Szczecin: February 17, 1884 | Manfred Krifka | Dachau: April 26, 1956 - Szczecin: February 17, 1884

Ukrainian mathematics educator | For Scientific Achievements Badge (2010), Excellence in Education of Ukraine Badge (2004) | National Pedagogical Dragomanov University

American philosopher and information scientist | Barwise Prize (2014) | Stanford University, University of the Witwatersrand | April 26, 1954 - Chicago

German philosopher and historian | Free University Berlin | Krumbach: April 26, 1953 - Lima: October 5, 1885 | Wilhelm Schmid | Krumbach: April 26, 1953

politician | Faculty of Philosophy at Saint Petersburg State University | East Berlin: April 26, 1947 - Worcester: April 28, 1842 | Igor Chubais | East Berlin

American mathematician, programmer/hacker | gun, Hashlife, Gosper's algorithm | Massachusetts Institute of Technology | New Jersey: April 26, 1943 - Nancy

American philosopher and semiotician | Chicago: April 26, 1942 - Greensburg: January 7, 2017 | John Deely | Chicago: April 26, 1942 - Greensburg: January 7, 2017

German linguist and computer scientist | Forschungspreis Technische Kommunikation (1981) | Marburg: April 26, 1942 - Bengaluru: May 28, 2021 | Walther von Hahn

Russian scientist | Institute of Oriental Studies of the Russian Academy of Sciences, Vytautas Magnus University | Mažeikiai: April 26, 1941 - Kaunas: October 31, 2007

American mathematician | Camden High School, New York University | Camden: April 26, 1940 - March 26, 2023 | Thomas J. Osler | Camden: April 26, 1940 - March

Roman Catholic priest, Polish philosopher | Cardinal Stefan Wyszyński University in Warsaw | Budne, Podlaskie Voivodeship: April 26, 1940 - January 19, 2014

Soviet mathematician and dissident (1939-2015) | Order for Bravery 1st Class of Ukraine (2006), Antonovych prize | Odesa University, Faculty of Mechanics and

Maltese university professor and rector | Rhodes Scholarship (1955) | Catholic University of Paris, Università Cattolica del Sacro Cuore, University of Malta

German philosopher | Order of St. Sylvester | Fulda: April 26, 1934 - Reichenberg: October 5, 2013 | Winfried Weier | Fulda: April 26, 1934 - Reichenberg

Ukrainian academic and educator | Merited Worker of Higher Education of the Ukrainian SSR (1983), Honored Scientist of Ukraine (2003), Order of the Badge of

German-born American physicist | Fellow of the American Academy of Arts and Sciences, honorary doctorate of Paris Observatory, PSL University (1976), George E.

Canadian Nobel laureate in chemistry | honorary doctorate at the Laval University (1995), Nobel Prize in Chemistry (1993), Flavelle Medal (1992), Companion of

Swiss sportswear inventor | April 26, 1932 - Winterthur: November 6, 2022 | Hans Hess | April 26, 1932 - Winterthur: November 6, 2022

American physicist (1929-2013) | Fellow of the American Association for the Advancement of Science, Samuel Wesley Stratton Award (1973), E. Bright Wilson Award

Dutch economist (1928-2014) | Fellow of the Econometric Society (1972) | University of Amsterdam | The Hague: April 26, 1928 - Amsterdam: March 15, 2014 | Mars

Italian physicist (1928-2020) | Scuola Normale Superiore. Classe di Scienze, University of Pisa | Grosseto: April 26, 1928 - Padua: January 2, 2020 | Marcello

Polish chemist | Łódź University of Technology | Vilnius: April 26, 1928 - Łódź: February 27, 2001 | Mieczysław Grabowski (Mieczyslaw Grabowski)

Italian lawyer and philosopher (1927-2017) | honorary doctor of the University of Bucharest (2000), Goethe Medal (2001), honorary doctor of Erasmus University

Italian philosopher and lawyer (1913–1967) | University of Turin | Ancona: April 26, 1913 - Turin: November 21, 1967 | Bruno Leoni | Ancona: April 26, 1913

Italian physicist and politician (1911-1974) | Porto Recanati: April 26, 1911 - Rome: May 26, 1974 | Enrico Medi | Porto Recanati: April 26, 1911 - Rome: May 26, 1974

Spanish philosopher | Irun: April 26, 1906 - Cambo-les-Bains: February 19, 1981 | Juan Thalamas Labandibar (Basaburu | J. P. Yoldi | Juan de Emparan | Juan de

April 26, 1906 - Vienna: May 24, 1901 | Pare Llanos | April 26, 1906 - Vienna: May 24, 1901

April 26, 1904 - London: August 14, 1996 | Ariyama Kanetaka | April 26, 1904 - London: August 14, 1996

Seismologist and mathematician | Honorary Fellow of the Royal Society Te Apārangi | Richter scale | Stanford University, California Institute of Technology

American physicist | Guggenheim Fellowship (1940) | University of Michigan, Swarthmore College | Oberlin: April 26, 1900 - Ann Arbor: April 3, 1976 | David M.

German physicist (1895–1963) | Humboldt University of Berlin, University of Göttingen, University of Erlangen–Nuremberg | Wiesbaden: April 26, 1895

Italian underwater diver and inventor (1891–1930) | Viareggio: April 26, 1891 - Belle Île: December 7, 1930 | Alberto Gianni | Viareggio: April 26, 1891

Italian chemist and politician (1889-1966) | Sapienza University of Rome | Castelsardo: April 26, 1889 - Turin: March 25, 1966 | Michele Giua | Castelsardo

Austrian philosopher and logician (1889–1951) | Medal for Bravery | Philosophical Investigations | University of Cambridge, Victoria University of

German mathematician (1882-1929) | Ludwig-Maximilian-University in Munich, Frederick William University Berlin | Stuttgart: April 26, 1882 - Würzburg: August 6, 1929

Norwegian fishmonger and inventor (1880-1962) | April 26, 1880 - September 3, 1962 | Nekolai Dahl | April 26, 1880 - September 3, 1962

British physicist (1879-1959) | Silliman Memorial Lectures (1931), Knight Bachelor, Nobel Prize in Physics (1928), Hughes Medal (1920), Royal Medal (1930)

German engineer, historian of science, and scientific writer (1874–1957) | Rudolf-Diesel-Medaille | Neuss: April 26, 1874 - Wilhelmshaven: May 22, 1957

American mathematician (1874-1952) | Fellow of the Institute of Mathematical Statistics (1939) | Huntington–Hill method | University of Strasbourg, Harvard University

Swedish translator | Knight of the Order of the Polar Star (1937), Commander of the Order of the White Rose of Finland (1941) | Helsinki: April 26, 1874

American physicist | Fellow of the American Physical Society | Northwestern University, University of Pennsylvania | Waterloo: April 26, 1872 - Chicago

American entrepreneur, businessman, executive, and inventor | April 26, 1868 - May 19, 1946 | William W. Kincaid | April 26, 1868 - May 19, 1946

Italian businessman and geologist (1857–1921) | Schio: April 26, 1857 - Schio: March 16, 1921 | Olinto De Pretto | Schio: April 26, 1857 - Schio: March 16, 1921

Russian legal scholar | Faculty of Law, Saint Petersburg State University | Saint Petersburg: April 26, 1853 - December 10, 1904 | Nikolai Korkunov | Saint

Ukrainian inventor (1852–1924) | rain gauge, movie camera, anemogram | National University of Kharkiv | Okip: April 26, 1852 - Odesa: May 20, 1924 | Joseph

American philosopher (1847–1915) | Punxsutawney: April 26, 1847 - Grove City: December 18, 1915 | Alexander T. Ormond | Punxsutawney: April 26, 1847 - Grove

naval officer (1839–1885) | Officers' Cross (1882), Knight of the Order of the Oak Crown (1878), Aceh Medal (1875), Honorable Mention (1874), Expedition

German chemist and entrepreneur (1838-1919) | Paris: April 26, 1838 - February 24, 1919 | Wilhelm Kalle - Paul Wilhelm Kalle | Paris: April 26, 1838 - February 24, 1919

American inventor and businessman (1836-1914) | Phillipston: April 26, 1836 - Cleveland: June 22, 1914 | Thomas H. White | Phillipston: April 26, 1836

German chemist (1834–1915) | Knight of the Order of the Crown of Italy (1871) | University of Göttingen, University of Bern | Frankfurt: April 26, 1834

British mathematician (1832-1905) | St John's College | Walworth: April 26, 1832 - Worthing: January 29, 1905 | Robert Tucker | Walworth: April 26, 1832

Swedish mathematician | Uppsala University | April 26, 1832 - Gustavsberg parish: March 28, 1906 | Göran Dillner (Goran Dillner) | April 26, 1832

April 26, 1822 - Yalta: February 8, 1921 | Isaak Gröbli (Isaak Grobli) | April 26, 1822 - Yalta: February 8, 1921

Scottish chemist and photographer (1821–1848) | University of Aberdeen | St Andrews: April 26, 1821 - St Andrews: January 14, 1848 | Robert Adamson | St

American firearms inventor | Madison: April 26, 1813 - Washington, D.C.: May 4, 1891 | Edward Maynard | Madison: April 26, 1813 - Washington, D.C.: May 4, 1891

German entrepreneur and inventor (1812–1887) | Essen: April 26, 1812 - Essen: July 14, 1887 | Alfred Krupp | Essen: April 26, 1812 - Essen: July 14, 1887

German mathematician and astronomer (1807-1861) | Königslutter am Elm: April 26, 1807 - July 25, 1861 | August Wilhelm Julius Uhde | Königslutter am Elm

Norwegian pharmacist and inventor (1793-1869) | Order of St. Olav (1868), Royal Order of Vasa | Røros Municipality: April 26, 1793 - Christiania: November 27, 1869

British explorer (1786-1875) | Great Yarmouth: April 26, 1786 - Sydney: November 9, 1875 | William Hovell | Great Yarmouth: April 26, 1786 - Sydney: November 9, 1875

German scientist (1780–1860) | Bavarian Maximilian Order for Science and Art (1853) | University of Jena, Leipzig University | Hohenstein-Ernstthal: April

Austrian mathematician | Kamieniec Ząbkowicki: April 26, 1740 - Lisbon: January 1, 1800 | Anton Felkel | Kamieniec Ząbkowicki: April 26, 1740 - Lisbon: January 1, 1800

French mathematician (1739-1829) | Renwez: April 26, 1739 - Paris: October 11, 1829 | Nicolas Conteray Lallemant | Renwez: April 26, 1739 - Paris: October 11, 1829

Scottish philosopher (1710–1796) | Fellow of the Royal Society of Edinburgh (1783) | Essays on the Intellectual Powers of Man, An Inquiry into the Human

Flemish mathematician | Erembodegem: April 26, 1653 - Bruges: May 10, 1731 | Jan Vaerman | Erembodegem: April 26, 1653 - Bruges: May 10, 1731