Estonian writer and mathematician | University of Tartu | Tallinn: April 13, 1999 - January 24, 2024 | Mikael Raihhelgauz | Tallinn: April 13, 1999 - January 24, 2024

chairholder of the synod of the Evangelical Church in Germany | University of Regensburg | Schwandorf: April 13, 1996 - Canterbury: August 31, 2002

Russian politician | Faculty of Educational Studies, MSU Faculty of Chemistry | Moscow: April 13, 1984 - November 10, 2011 | Maria Baronova - Мария

American inventor | San Francisco Art Institute | Monterey: April 13, 1981 - Minsk: October 14, 2021 | Bryan Davis | Monterey: April 13, 1981 - Minsk: October 14, 2021

Moscow State Institute of International Relations | April 13, 1980 - Los Angeles: December 5, 1911 | Olga Lebedeva | April 13, 1980 - Los Angeles: December 5, 1911

Indian scientist | Indian Institute of Science, Bengaluru, University of Lucknow | Lucknow: April 13, 1975 - Lille: August 20, 1866 | Ritu Karidhal | Lucknow

April 13, 1973 - Queens' College: October 20, 1896 | Emanuel Rutten | April 13, 1973 - Queens' College: October 20, 1896

researcher | Bukovinian State Medical University | Ispas: April 13, 1972 - Brno: December 1, 2014 | Larysa Sydorchuk | Ispas: April 13, 1972 - Brno: December 1, 2014

Indian physicist | Berhampur University, University of Mumbai | April 13, 1966 - April 18, 1930 | Arun K. Pati | April 13, 1966 - April 18, 1930 | Berhampur

Scottish chemist | Fellow of the Institute of Physics, Fellow of the Royal Society (2010), Tilden Prize (2013), Göran Gustafsson Prize for physics (2000)

Swedish physicist | Linköping University | Linköping Cathedral Congregation: April 13, 1960 - Nuenen: September 28, 2004 | Lars Hultman | Linköping

American mountain climber and inventor | New York City: April 13, 1959 - Little Compton: June 21, 2024 | John Middendorf | New York City: April 13, 1959

Kharkiv State Academy of Culture | April 13, 1956 - Oslo: February 20, 1985 | Antonina Kikot' | April 13, 1956 - Oslo: February 20, 1985 | Kharkiv State

writer from Mexico | fellow of a University of Cambridge college | Autonomous University of Mexico | Mexico City: April 13, 1954 - January 7, 1952 | Carlos

Spanish scientist and physician | King Juan Carlos University | Madrid: April 13, 1954 - Madrid: May 8, 2013 | Pablo Gil Loyzaga | Madrid: April 13, 1954

German mathematician | University of Augsburg | Tettau: April 13, 1954 - Peterborough: October 9, 1718 | Peter Knabner | Tettau: April 13, 1954 - Peterborough

Ph.D. University of Cambridge 1979 | University of Cambridge | April 13, 1954 - Moscow: February 14, 2019 | Charles Matthews | April 13, 1954 - Moscow: February 14, 2019

Austrian literature reviewer | The VIZE 97 Prize (2010), Wissenschafter des Jahres (2006), Ehrenpreis des österreichischen Buchhandels für Toleranz in Denken

Brazilian mathematician | University of Waterloo | Recife: April 13, 1952 - Rio de Janeiro: June 20, 2013 | Sóstenes Lins (Sostenes Lins) | Recife: April 13

Russian mathematician | Steklov Institute of Mathematics | April 13, 1952 - November 21, 2023 | Viktor Stepanovich Kulikov | April 13, 1952 - November 21, 2023

physicist | Weizmann Prize for Exact Sciences (2013) | Tel Aviv University | Haifa: April 13, 1952 - June 5, 2015 | Eshel Ben-Jacob | Haifa: April 13, 1952

Spanish physicist | Goldman Environmental Prize (2003) | University of Zaragoza | Madrid: April 13, 1951 - Schenectady: October 26, 1923 | Pedro Arrojo-Agudo

French astronaut (1949–2023) | Legion of Honour | Grenoble Institute of Technology, Grenoble Alpes University, Mines ParisTech | Kehl: April 13, 1949 - Albi

French journalist and publisher | Osimo: April 13, 1947 - Oxford: May 24, 1632 | Robert Maggiori | Osimo: April 13, 1947 - Oxford: May 24, 1632

Brazilian philosopher (1946-2021) | Jaguapitã: April 13, 1946 - July 22, 2021 | Roberto Romano | Jaguapitã: April 13, 1946 - July 22, 2021

German chemist | Dahlem: April 13, 1944 - Troy: March 24, 1961 | Werner Urland | Dahlem: April 13, 1944 - Troy: March 24, 1961

Norwegian academic | Oslo: April 13, 1942 - Edinburgh: December 21, 1835 | Knut Seip | Oslo: April 13, 1942 - Edinburgh: December 21, 1835

Swiss mathematician, academic and researcher | ETH Zurich | April 13, 1941 - January 1, 1988 | Guido Mislin | April 13, 1941 - January 1, 1988 | ETH Zurich

Polish chemist | Knight of the Order of Polonia Restituta, Bronze Medal of Merit for National Defence, Gold Cross of Merit, Medal of the National Education Commission

Soviet and Russian historian | Prize of the President of the Russian Federation, Russian Federation Presidential Certificate of Gratitude, Order of the Badge

Japanese Professor of Chemistry | George and Christine Sosnovsky Award in Cancer Therapy (2016), Tetrahedron Prize (2001), Prelog Medal (1995), Nakanishi Prize

Soviet and Russian physicist | Order of Friendship of Peoples, USSR State Prize, P. N. Lebedev Gold Medal, Order of the Badge of Honour | Peter the Great Saint

Russian scientist | Order of the Badge of Honour | Moscow State University Faculty of Geology | Moscow: April 13, 1936 - Moscow: October 11, 2013 | Inessa

Physicist, MIT professor | Rensselaer Polytechnic Institute, The Bronx High School of Science, Harvard University | The Bronx: April 13, 1935 - Lexington: March 31, 1987

Taiwanese cartoonist | National Taipei University of Education | April 13, 1934 - Moscow: May 29, 1938 | Liu Hsing-chin | April 13, 1934 - Moscow: May 29, 1938

American logician | Guggenheim Fellowship | Harvard University | Cambridge: April 13, 1933 - Cambridge: April 19, 2024 | Charles Parsons | Cambridge: April 13

Russian chemist | State Prize of the Russian Federation, honorary citizen of Biysk, Government Prize of the Russian Federation, Order "For Merit to the

Slovenian academic (1930-2008) | Prešeren Fund Awards | University of Sarajevo, University of Ljubljana | Ljubljana: April 13, 1930 - Ljubljana: June 11, 2008

American electrical engineer | IEEE Quantum Electronics Award (1980), Harvey Prize (1992), IEEE Photonics Award (2011), National Medal of Science (2009)

mechanical engineer (1929-2019) | Women of Color Technology Award for Educational Leadership (1977), Distinguished Service Award (2001), TSU Mechanism of the

National University of La Plata (1951) | April 13, 1926 - Budapest: March 11, 1913 | Mercedes Corvalán (Mercedes Corvalan) | April 13, 1926 - Budapest

Australian linguist (1925-2018) | doctor honoris causa from the University of Nancy (1968), honorary doctor of the Beijing Normal University (2011), honorary

Czechoslovak swimmer | King's College London | Prague: April 13, 1924 - Frascati: January 6, 2011 | Jiří Linhart (Jiri Linhart) | Prague: April 13, 1924

American physicist | City College of New York, DeWitt Clinton High School, University of Chicago, Columbia University | New York City: April 13, 1917 - Urbana

Chinese scientist | Academician of the Chinese Academy of Sciences (1980) | National Southwestern Associated University, California Institute of Technology

Israeli physicist and philosopher of physics (1915-2010) | Abraham Pais Prize for History of Physics (2007), Israel Prize (1984), The EMET Prize for Art

Hindu guru (1914-1998) | Machilipatnam: April 13, 1914 - Srikalahasti: April 10, 1998 | Swami Vidya Prakashananda Giri | Machilipatnam: April 13, 1914

Argentine mathematician (1914–2005) | Illustrious Citizen of Buenos Aires (2003), Konex Award (2006) | University of Buenos Aires, Mariano Acosta school

Italian inventor (1913-1994) | Ostiano: April 13, 1913 - Alassio: August 19, 1994 | Leon Battista Gaburri | Ostiano: April 13, 1913 - Alassio: August 19, 1994

Polish-American mathematician | John von Neumann Prize, Commander with Star of the Order of Polonia Restituta | Monte Carlo method, Ulam spiral, Borsuk–Ulam

Italian experimental physicist (1905–1993) | Matteucci Medal (1991), Wolf Prize in Physics (1987), Elliott Cresson Medal (1974), Commander of the Order of

American designer and architect; creator of Scrabble (1899–1993) | Scrabble | Poughkeepsie High School | Poughkeepsie: April 13, 1899 - Rhinebeck: April 4, 1993

American sociologist (1899–1959) | University of Vienna | Vienna: April 13, 1899 - New York City: May 20, 1959 | Alfred Schütz (Alfred Schutz) | Vienna

Uruguayan writer, philosopher and doctor (1893-1975) | Grand Cross of the Order of Civil Merit (1968) | University of the Republic | Melo: April 13, 1893

physicist (1892-1973) | Knight Commander of the Order of the Bath, Fellow of the Royal Aeronautical Society, Fellow of the American Physical Society, honorary

American cryptographer (1889–1958) | University of Chicago | Worthington: April 13, 1889 - Washington, D.C.: August 7, 1958 | Herbert Yardley | Worthington

American inventor (1888–1965) | IEEE Medal of Honor (1963), National Inventors Hall of Fame (2011), Elliott Cresson Medal (1959) | Yale School of Engineering

Hungarian marxist philosopher and literary critic (1885–1971) | Order of the Red Banner (1969), Jubilee Medal "In Commemoration of the 100th Anniversary of

Finnish chemist | April 13, 1881 - August 18, 1965 | Harald Kyrklund | April 13, 1881 - August 18, 1965

mathematician from Italy (1879-1961) | Bordin Prize (1907), Mathematical Prize of the Italian Academy of Sciences (1906) | Severi variety | University of Turin

Romanian historian (1870-1914) | Bordin Prize (1917), Marcelin Guérin Prize (1906) | University of Bucharest | Bucharest: April 13, 1870 - Bucharest: May 24, 1914

British mathematician (1869–1950) | Bryn Mawr College, University of London, University of Göttingen, Girton College | Cumberland: April 13, 1869 - Wayne

Cuban judge (1865-1951) | doctor honoris causa from the University of Paris (1938), honorary doctorate from Columbia University | Complutense University of Madrid

chemist (1863–1929) | Vienna: April 13, 1863 - Frankfurt: June 23, 1929 | Richard Lorenz | Vienna: April 13, 1863 - Frankfurt: June 23, 1929

scientist | Medical faculty of Moscow University | Dnipro: April 13, 1858 - Moscow: October 6, 1912 | Leonid Golubinin | Dnipro: April 13, 1858 - Moscow: October 6, 1912

American surgeon and radiologist (1851–1928) | City College of New York, Columbia University, Columbia University Vagelos College of Physicians and Surgeons

April 13, 1850 - Mito Domain: January 1, 1682 | Alonzo Howard Clark | April 13, 1850 - Mito Domain: January 1, 1682

Hungarian philosopher & scholar (1850–1927) | Pest: April 13, 1850 - Budapest: October 23, 1927 | Bernhard Alexander | Pest: April 13, 1850 - Budapest

Australian doctor (1843-1917) | Fellow of the Linnean Society of London | April 13, 1843 - November 15, 1917 | Thomas Pennington Lucas | April 13, 1843

English inventor, engineer and shipwright | Fellow of the Royal Society (1898) | Wimshurst machine | Poplar: April 13, 1832 - Clapham: January 3, 1903 | James

American businessman (1831–1884) | University of Pennsylvania | New Castle County: April 13, 1831 - Gibbstown: March 29, 1884 | Lammot du Pont I | New Castle

Czech historian, lawyer and nobleman (1827–1909) | Order of the Iron Crown | Vysoké Mýto: April 13, 1827 - Vysoké Mýto: December 29, 1909 | Hermenegild

German mathematician (1823–1901) | Knight I Class of the Saxon Order of Civil Merit, Civil Cross of Honor 1st Class, Großherzoglich Sächsische

French politician (1815-1893) | Grand Cross of the Legion of Honour | Aurillac: April 13, 1815 - Paris: April 8, 1893 | Félix Esquirou de Parieu (Felix

British mathematician (1813–1844) | University of Edinburgh | Edinburgh: April 13, 1813 - Edinburgh: February 23, 1844 | Duncan Farquharson Gregory

Lund University | April 13, 1811 - Göttingen: February 24, 1799 | Paulus Genberg | April 13, 1811 - Göttingen: February 24, 1799

Italian inventor and telephone pioneer (1808–1889) | telephone, invention of telephone, Meucci telephone | Academy of Fine Arts, Florence | Florence: April

German Protestant theologian and Orientalist (1796–1864) | Martin Luther University Halle-Wittenberg | Welbsleben: April 13, 1796 - Jena: March 16, 1864

American clockmaker (1772-1852) | National Inventors Hall of Fame (2007) | East Windsor: April 13, 1772 - Plymouth: February 24, 1852 | Eli Terry | East

British inventor and mining engineer (1771-1833) | Tregajorran: April 13, 1771 - Dartford: April 22, 1833 | Richard Trevithick | Tregajorran: April 13, 1771

English inventor of the hydraulic press | Barnsley: April 13, 1748 - London: December 9, 1814 | Joseph Bramah | Barnsley: April 13, 1748 - London: December 9, 1814

president of the United States from 1801 to 1809 | Fellow of the American Academy of Arts and Sciences | College of William & Mary | Shadwell: April 13, 1743

Italian mathematician and astronomer (1728-1784) | Fellow of the Royal Society (1757) | University of Pavia, liceo classico Cesare Beccaria, Santa Maria al Carrobiolo

Italian theologian, mathematician and philosopher | Nicosia: April 13, 1694 - Palermo: August 24, 1760 | Gabriele Bonomo | Nicosia: April 13, 1694 - Palermo

German astronomer and mathematician (1691-1755) | University of Jena, Martin Luther University Halle-Wittenberg, University of Basel | Großneuhausen: April

philosopher (1663-1750) | University of Paris, University of Lausanne, University of Geneva, Leiden University | Lausanne: April 13, 1663 - Lausanne: January 1, 1750

French Roman Catholic mystic | Montargis: April 13, 1648 - Blois: June 9, 1717 | Jeanne-Marie Bouvier de La Motte Guyon | Montargis: April 13, 1648 - Blois: June 9, 1717

French writer | Epiry: April 13, 1618 - Autun: April 9, 1693 | Roger de Rabutin, Comte de Bussy | Epiry: April 13, 1618 - Autun: April 9, 1693

Swiss theologian | Constance: April 13, 1492 - Winterthur: December 16, 1564 | Ambrosius Blarer | Constance: April 13, 1492 - Winterthur: December 16, 1564