John James Speed

American mathematician and violinist | Presidential Early Career Award for Scientists and Engineers (2019), Guggenheim Fellowship (2023), Marie Curie

Uzbekistani scientist | Tashkent: July 20, 1974 - Donetsk: August 10, 2012 | Barno Abdullayeva | Tashkent: July 20, 1974 - Donetsk: August 10, 2012

Polish economist and politician | SGH Warsaw School of Economics, École polytechnique | Kraków: July 20, 1973 - Kraków: August 10, 2014 | Michał Kurtyka

researcher | MSU Faculty of Physics | Bryansk: July 20, 1973 - Del Norte: July 28, 1965 | Andrey A Fedyanin | Bryansk: July 20, 1973 - Del Norte: July 28, 1965

British actress | Orsett: July 20, 1969 - November 20, 2017 | Girija Shettar | Orsett: July 20, 1969 - November 20, 2017

British broadcaster | Redland High School for Girls, Pembroke College | England: July 20, 1966 - Jena: December 3, 1888 | Tanya Beckett | England: July 20

Norwegian researcher | Norway: July 20, 1964 - Siena: December 19, 1705 | Bjørn Hofmann (Bjorn Hofmann) | Norway: July 20, 1964 - Siena: December 19, 1705

professor of mathematics | Cornell University | Kolkata: July 20, 1963 - January 1, 1988 | Ambar Sengupta | Kolkata: July 20, 1963 - January 1, 1988 | Cornell University

Serbian Canadian poet | Zmajeva prize | Požarevac Gymnasium | Požarevac: July 20, 1960 - Paris: August 26, 1845 | Prvoslav Vujcic | Požarevac: July 20, 1960

German physicist | German Future Prize (2012), Science Award of Lower Saxony (2011), Forschungspreis Technische Kommunikation (2001) | Minden: July 20, 1958

French philosopher, writer & editor | 6th arrondissement of Lyon: July 20, 1955 - 15th arrondissement of Paris: December 27, 2023 | Brigitte Boudon | 6th

Russian scientist | Saint Petersburg: July 20, 1955 - August 14, 1877 | Andrey Belotserkovsky | Saint Petersburg: July 20, 1955 - August 14, 1877

Swedish philosopher (1954-) | Lund University | July 20, 1954 - Engelbrekt church parish: March 2, 1950 | Nils-Eric Sahlin | July 20, 1954 - Engelbrekt church

American astronomer | University of California, Santa Barbara, University of South Florida | Lakewood: July 20, 1951 - London: January 1, 1857 | Alan Boss

Hungarian mathematician and computer scientist | Gödel Prize (1993), Knuth Prize (2015), Paul Erdős Prize, Dijkstra Prize (2016) | Hungarian Academy of

American political theorist (born 1949) | Fellow of the American Academy of Arts and Sciences, Guggenheim Fellowship | Princeton University | July 20, 1949

Italian politician and teacher | Liceo Classico Archita - Istituto Magistrale "Livio Andronico", Sapienza University of Rome | Roseto Capo Spulico: July 20

German physicist | Great Cross with Star and Sash of the Order of Merit of the Federal Republic of Germany, National Inventors Hall of Fame (1994), Bavarian

German mathematician | Goethe University Frankfurt | Herford: July 20, 1947 - Hanover: July 26, 1995 | Wilhelm Leber | Herford: July 20, 1947 - Hanover: July 26, 1995

Czech-Canadian mathematician | John von Neumann Theory Prize (2015), Frederick W. Lanchester Prize (2007) | Charles University, University of Waterloo

July 20, 1943 - Moscow: January 1, 2005 | Jacques De Visscher | July 20, 1943 - Moscow: January 1, 2005

astronomer | Carl Sagan Prize for Science Popularization (2015), Klumpke-Roberts Award (2004), Fellow of the Committee for Skeptical Inquiry | Princeton

German mathematician | honorary doctor of the Saarland University (1992) | University of Hamburg | Wangen im Allgäu: July 20, 1941 - Leipzig: January 12, 1811

Canadian physicist (born 1941) | Acfas Urgel-Archambeault Award (1988), IEEE Fellow, honorary doctorate from Joseph Fourier University (1995), Fellow of the

Russian mathematician | Honoured Higher education employee of the Russian Federation, Kolmogorov Prize | Moscow State University, MSU Faculty of Mechanics and

State Prize of Ukrainian SSR in Science and Technology (1984), Sinelnikov Prize (NAS of Ukraine) (1995) | Rivne State University of the Humanities | July

German author | Szczecin: July 20, 1937 - July 5, 2023 | Illobrand Ludwiger | Szczecin: July 20, 1937 - July 5, 2023

July 20, 1936 - Moscow: February 16, 1904 | Karsten Peter Thiessen | July 20, 1936 - Moscow: February 16, 1904

German mathematician | Leipzig University | Pethau: July 20, 1935 - Berlin: December 25, 2023 | Hannelore Bernhardt | Pethau: July 20, 1935 - Berlin: December 25, 2023

German mathematician | Goethe University Frankfurt | Bethlehem: July 20, 1934 - Berlin: October 1, 1974 | Otto H. Kegel | Bethlehem: July 20, 1934 - Berlin

Romanian mathematician (1933–2020) | Norbert Wiener Prize in Applied Mathematics (1995), honorary doctor of the University of Amsterdam (2000) | University

Iraqi mathematician | University of Baghdad, Oregon State University, Illinois Institute of Technology | July 20, 1932 - January 1, 1058 | Abdul Jerri | July

Born: 20 July 1929 in Clarecastle, County Clare, Ireland; Died: 8 June 1966 in Nottingham, England | The North Monastery, University of Exeter, National

Russian mathematician (1929–1995) | Moscow State University, MSU Faculty of Mechanics and Mathematics | Saint Petersburg: July 20, 1929 - Moscow: November 12, 1995

American philosopher | Guggenheim Fellowship (1987) | New York City: July 20, 1929 - January 1, 1154 | Jane Roland Martin | New York City: July 20, 1929

French West Indian psychiatrist and philosopher (1925–1961) | The Wretched of the Earth, Black Skin, White Masks, A Dying Colonialism | University of Lyon

Dutch chemist (1922-2013) | Knight of the Order of the Netherlands Lion, doctor honoris causa of Keiō University | Utrecht: July 20, 1922 - March 15, 2013

German theoretical physicist (1919-2003) | University of Göttingen | Barmen: July 20, 1919 - Geneva: March 9, 2003 | Rolf Hagedorn | Barmen: July 20, 1919

Soviet scientist in radio electronics, Soviet Army lieutenant general (1918-1998) | Order of Lenin, Jubilee Medal "30 Years of the Soviet Army and Navy", Medal

German chemist (1902–1985) | Wilhelm Exner Medal (1961), Chemical Pioneer Award (1979), Great Golden Medal of Honour for Services to the Republic of Austria

Thai politician | Chakrabarti Mala Medal (1942), Grand Cross of the Order of the White Elephant (1949), Grand Cordon of the Order of the Crown of Thailand (1957)

Polish-Swiss chemist (1897-1996) | Nobel Prize in Physiology or Medicine (1950), Centenary Prize (1952), Copley Medal (1968), Marcel Benoist Prize (1947)

Ph.D. Universität Wien 1921 | University of Vienna | Vienna: July 20, 1896 - Cambridge: February 10, 1956 | Ernst A. Hauser | Vienna: July 20, 1896

Finnish middle-distance runner and comics artist (1894-1952) | Pekka Puupää | Sortavala Teacher Training College | Helsinki: July 20, 1894 - Ekenäs

Founder of the Cord Corporation (1894-1974) | Warrensburg: July 20, 1894 - Reno: January 2, 1974 | Errett Lobban Cord | Warrensburg: July 20, 1894 - Reno

American physicist (1892-1958) | Fellow of the American Physical Society | University of Vienna | Vienna: July 20, 1892 - West Lafayette: January 1, 1958

Spanish economist, writer and physicist (1891–1982) | College of Pharmacy Madrid, Facultad de Ciencias Físicas (Universidad Complutense de Madrid) | Grado

American inventor (1890–1979) | Pine Bluff High School | Pine Bluff: July 20, 1890 - Pine Bluff: December 9, 1979 | Freeman Harrison Owens | Pine Bluff: July

Russian scientist (1884–1931) | Faculty of Oriental Studies of the St. Petersburg University | Kaluga: July 20, 1884 - Siversky: August 17, 1931 | Boris

Baltic German philosopher (1880–1946) | Heidelberg University, University of Vienna, Imperial University of Dorpat | Kõnnu: July 20, 1880 - Innsbruck: April 26, 1946

German diplomat, chemist and author (1879-1942) | Guntersblum: July 20, 1879 - Berlin: January 25, 1942 | Johannes Schröder (Johannes Schroder) | Guntersblum

Russian mathematician (1879–1970) | Faculty of Physics and Mathematics of Kyiv University, University of Paris, University of Göttingen | Zhytomyr: July 20

German mathematician (1876-1944) | University of Göttingen | Frankfurt: July 20, 1876 - Theresienstadt concentration camp: November 13, 1944 | Otto Blumenthal

Brazilian aviation pioneer (1873-1932) | Livro dos Heróis e Heroínas da Pátria, Grand Officer of the Legion of Honour, Ordem do Mérito Cultural (2006)

Romanian scientist (1872-1925) | Vădeni: July 20, 1872 - Bucharest: March 5, 1925 | Gheorghe Munteanu-Murgoci | Vădeni: July 20, 1872 - Bucharest: March 5, 1925

Russian and Soviet physicist and radio technician | Order of Saint Anna, 4th class, Order of Lenin | Imperial St. Petersburg University | Petrozavodsk: July

Italian novelist, essayist, journalist and nationalist political figure (1865–1931) | Montelupo Fiorentino: July 20, 1865 - Rome: December 10, 1931 | Enrico

British chemist (1848-1925) | Fellow of the Royal Society, Bakerian Lecture (1905), Longstaff Prize (1894), Royal Medal (1903), Copley Medal (1920) | July 20

German chemist | Pankow: July 20, 1846 - Brunswick: February 26, 1926 | Richard Meyer | Pankow: July 20, 1846 - Brunswick: February 26, 1926

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

German composer (1837–1922) | University of Göttingen, Technical University of Braunschweig | Brunswick: July 20, 1837 - Brunswick: April 26, 1922 | Hans

American engineer (1832–1882) | Bessemer Gold Medal (1882), National Inventors Hall of Fame (2006) | Lakeville: July 20, 1832 - Brooklyn: January 29, 1882

American educator (1825-1873) | Greenfield: July 20, 1825 - Hudson County: August 6, 1873 | John Fair Stoddard | Greenfield: July 20, 1825 - Hudson County

Silesian scientist and Augustinian friar (1822–1884) | Commander's Cross of the Order of Franz Joseph | University of Vienna, Palacký University Olomouc

July 20, 1821 - Paris: April 20, 1830 | Benjamin Franklin Coston | July 20, 1821 - Paris: April 20, 1830

Italian luthier, created the Neapolitan mandolin | Naples: July 20, 1806 - Santiago de Compostela: March 21, 1961 | Pasquale Vinaccia | Naples: July 20, 1806

Greek-Austrian university professor and astronomer | University of Vienna, Vienna Observatory | Vienna: July 20, 1802 - Vienna: July 14, 1860 | Georgios

July 20, 1801 - Bielefeld: June 27, 1947 | Bernhard Beer | July 20, 1801 - Bielefeld: June 27, 1947

Polish explorer and geologist (1797–1873) | Knight Commander of the Order of St Michael and St George, Fellow of the Royal Geographical Society, Fellow of

French chemist (1795–1871) | Officer of the Legion of Honour (1855) | École polytechnique | Voiron: July 20, 1795 - Voiron: April 8, 1871 | Jean-Baptiste

Scottish architect, mathematician and engineer | East Lothian: July 20, 1765 - Carlisle: June 18, 1844 | Peter Nicholson | East Lothian: July 20, 1765

Dutch university teacher | The Hague: July 20, 1757 - Groningen: April 1, 1823 | Jacob Baart de la Faille | The Hague: July 20, 1757 - Groningen: April 1, 1823

English inventor | Fellow of the Royal Society | Newton: July 20, 1756 - Derby: December 29, 1830 | William Strutt | Newton: July 20, 1756 - Derby: December 29, 1830

French philosopher (1754-1836) | Commander of the Legion of Honour, Order of Saint Louis | University of Strasbourg | Paris: July 20, 1754 - Paris: March 9, 1836

German botanist, mathematician, theologian, priest and art collector (1748-1824) | Antoniterkirche | Cologne: July 20, 1748 - Cologne: March 18, 1824

French naval engineer, botanist and agronomist (1700-1782) | Fellow of the Royal Society | Paris: July 20, 1700 - Paris: August 22, 1782 | Henri-Louis Duhamel

Premier in the Joseon Dynasty (1539-1609) | Seoul: July 20, 1539 - Seoul: August 23, 1609 | Lee San-hae | Seoul: July 20, 1539 - Seoul: August 23, 1609