Hilmi İbar (Hilmi Ibar)

Estonian snowboarder, chemist and entrepreneur | Paide Hillar Hanssoo Basic School, University of Tartu | Tallinn: July 31, 1984 - Lucerne: October 25, 1866

Estonian chemist (born 1974) | July 31, 1974 - Buenos Aires: November 30, 1939 | Tarmo Tamm | July 31, 1974 - Buenos Aires: November 30, 1939

Armenian politician | Yerevan State University | Yerevan: July 31, 1969 - Ithaca: March 29, 2019 | Anoush Beghloyan | Yerevan: July 31, 1969 - Ithaca: March 29, 2019

Polish philosopher and theologian, former Dominican friar | Pontifical University of John Paul II | Prague: July 31, 1967 - February 8, 1998 | Tadeusz Bartoś

Dutch chemist | Knight of the Order of the Netherlands Lion (2013), Gregori Aminoff Prize (2018), Spinoza Prize (2010) | Dokkum: July 31, 1962 - Jerusalem

Russian politician (born 1959) | Excellence in Education of Ukraine Badge, Order “For fidelity to duty”, Crimea defense medal | Tavrida National V.I.

Japanese scientist | Tokyo Institute of Technology | Mito: July 31, 1957 - January 1, 1067 | Toyoshi Fuketa | Mito: July 31, 1957 - January 1, 1067 | Tokyo

German sculptor | Neubeuern: July 31, 1956 - Somerville: December 23, 2018 | Elisabeth von Samsonow | Neubeuern: July 31, 1956 - Somerville: December 23, 2018

mathematician | University of Bonn | Bayreuth: July 31, 1953 - February 21, 1899 | Horst Knörrer (Horst Knorrer) | Bayreuth: July 31, 1953 - February 21, 1899

Bulgarian philosopher | Sofia University, Leipzig University | Sofia: July 31, 1948 - Sofia: February 1, 2018 | Dimitŭr Zashev (Dimitur Zashev) | Sofia: July

Dutch philosopher and parapsychologist | July 31, 1947 - Oxford: May 5, 1971 | Hans Gerding | July 31, 1947 - Oxford: May 5, 1971

Spanish mathematician | Medal of the Royal Spanish Mathematical Society (2016) | University of Zaragoza | Pamplona: July 31, 1946 - Minusio: December 26, 1960

Indian mathematician | Fellow of the American Mathematical Society (2013), Guggenheim Fellowship, Shanti Swarup Bhatnagar Prize for Science and Technology (1989)

Israeli philosopher | The EMET Prize for Art, Science and Culture (2017) | Hebrew University of Jerusalem, University of Oxford | Jerusalem: July 31, 1945

British inventor and musician | Aiglon College, The King's School Canterbury, California College of the Arts | London: July 31, 1945 - Le Havre: June 21, 1913

French artist | Paris: July 31, 1944 - Cambridge: June 21, 1982 | Patrice Jeener | Paris: July 31, 1944 - Cambridge: June 21, 1982

Japanese physicist | Person of Cultural Merit (2016) | University of Tokyo | July 31, 1942 - March 30, 2006 | Hidetoshi Fukuyama | July 31, 1942 - March 30

Father of Wi-Fi | Surabaya: July 31, 1941 - Göttingen: May 5, 1859 | Vic Hayes | Surabaya: July 31, 1941 - Göttingen: May 5, 1859

Indian material physicist | Padma Shri in science & engineering, Fellow of the American Physical Society, Om Prakash Bhasin Award (1989), Shanti Swarup

American philosopher | Rhodes Scholarship (1952), Albertus-Magnus professorate (2013), National Humanities Medal (2004), Guggenheim Fellowship (1975), Fellow

American mathematical physicist and professor of mathematics and physics at Princeton University | APS Medal for Exceptional Achievement in Research (2022)

Belgian scientist | Université Libre de Bruxelles, Free University of Brussels | Brussels metropolitan area: July 31, 1931 - June 10, 2023 | Jean Jeener

American inventor, surfer and businessperson (1928-2013) | El Segundo High School | Boonville: July 31, 1928 - June 16, 2013 | Bob Meistrell | Boonville: July

American mathematician (1927-2016) | doctor honoris causa from the Pierre and Marie Curie University (1990), Guggenheim Fellowship (1966), Guggenheim

American philosopher | Rolf Schock Prize in Logic and Philosophy (2011), Guggenheim Fellowship, Fellow of the American Academy of Arts and Sciences, Nicholas

American naval officer and scientist | Allan D. Emil Memorial Award (1987), Wilbur Cross Medal (1984) | United States Naval Academy, Yale University | New York

English Philosopher of Science | Yale University | England: July 31, 1924 - Salcombe: July 26, 1999 | John W. N. Watkins | England: July 31, 1924 - Salcombe

mathematician (1923–2014) | University of Paris | Blaye: July 31, 1923 - Montpellier: January 9, 2014 | Jean-Jacques Moreau - Jean Jacques Antoine Moreau

American chemist, inventor of Kevlar (1923–2014) | Howard N. Potts Medal (1976), ACS Award for Creative Invention (1980), Lemelson–MIT Prize (1999)

French philosopher (1921-1996) | La Garenne-Colombes: July 31, 1921 - Chatou: January 22, 1996 | Jacques Muglioni | La Garenne-Colombes: July 31, 1921

Italian chemist, partisan, Holocaust survivor, and writer (1919–1987) | Viareggio Prize (1982), Grawemeyer Award for Music Composition (1997), Premio

American biochemist (1918–2018) | Pfizer Award in Enzyme Chemistry (1955), Tolman Award (1981), William C. Rose Award (1989), Nobel Prize in Chemistry

German writer, philosopher and opinion journalist (1918-2002) | East Prussia: July 31, 1918 - Munich: October 28, 2002 | Gerhard Szczesny | East Prussia: July

University of São Paulo | July 31, 1914 - April 1, 2011 | André Tosello (Andre Tosello) | July 31, 1914 - April 1, 2011

Soviet physicist (1914-1986) | Max Jakob Memorial Award (1969), Order of the Red Banner of Labour, Order of Lenin, Medal "For the Defence of the Soviet

American physicist (1909–1997) | Sarah Berliner Research Fellowship, Fellow of the American Physical Society, IEEE Fellow | University of Paris, New York University

Soviet physicist (1908–1938) | Moscow State University | Liepāja: July 31, 1908 - gulag camp: November 28, 1938 | Semyon Shubin | Liepāja: July 31, 1908

Swiss chemist (1902-1993) | Barnard College, University of Chicago | Switzerland: July 31, 1902 - State College: January 1, 1993 | Thora Hardy - Thora

French artist (1901–1985) | Le Bel costumé, Tour aux figures, Monument with Standing Beast, Jardin d'émail | École supérieure d'art et design Le

Swedish occidentalist and mathematician | Uppsala University | Eskilstuna parish: July 31, 1900 - Uppsala Cathedral Assembly: February 8, 1979 | Carl-Erik

mathematician from Australia (1899-1987) | University of Queensland | Brisbane: July 31, 1899 - January 17, 1987 | Ethel Raybould | Brisbane: July 31, 1899

July 31, 1889 - Montreal: November 13, 2009 | Walter Schirren | July 31, 1889 - Montreal: November 13, 2009

German philosopher and sociologist (1887-1969) | Goethe-Plakette des Landes Hessen (1967) | Leipzig University, University of Greifswald | Leipzig: July 31

July 31, 1886 - January 1, 1101 | Ignas Končius (Ignas Koncius) | July 31, 1886 - January 1, 1101

German chemist (1885–1966) | Humboldt University of Berlin | Grenzach-Wyhlen: July 31, 1885 - Grenzach-Wyhlen: June 22, 1966 | Ernst Bürgin (Ernst Burgin)

American physicist (1882-1953) | Fellow of the Optical Society, Rumford Prize (1951), John Scott Award (1927), Frederic Ives Medal (1937) | University of

American mathematician (1863–1951) | Muhlenberg College, Cumberland University | Lehigh County: July 31, 1863 - Urbana: February 10, 1951 | George Abram

Knight of the Order of Agricultural Merit, Médaille commémorative du Maroc, Officer of the Legion of Honour | July 31, 1861 - Kryvyi Rih: April 24, 2011

member of the Swiss Federal Council (1857-1942) | University of Lausanne | Corcelles-près-Payerne: July 31, 1857 - Lausanne: November 9, 1942 | Ernest Chuard

Hungarian philosopher and educationalist (1856–1914) | Buda: July 31, 1855 - Budapest: August 22, 1914 | Frigyes Medveczky | Buda: July 31, 1855 - Budapest

German chemist (1855-1904) | University of Wrocław | Wrocław: July 31, 1855 - Brunswick: December 25, 1904 | Guido Bodländer (Guido Bodlander) | Wrocław

July 31, 1853 - Tartu: January 27, 1942 | Manuel Daza Gómez (Manuel Daza Gomez) | July 31, 1853 - Tartu: January 27, 1942

Swedish philosopher (1853-1931) | Uppsala University | Färnebo församling: July 31, 1853 - Kungsholm parish: May 11, 1931 | Frans von Schéele (Frans von

German chemist (1852-1931) | Krefeld: July 31, 1852 - Krefeld: November 5, 1931 | Edmund ter Meer | Krefeld: July 31, 1852 - Krefeld: November 5, 1931

Swiss physicist and professor at ETH Zurich (1849-1890) | Ottenbach: July 31, 1849 - Zurich: May 13, 1890 | Heinrich Schneebeli | Ottenbach: July 31, 1849

German geodesist (1843-1917) | Order of the Red Eagle 4th Class (1889), honorary member (1887), Foreign Member of the Royal Society (1908) | Leipzig University

German philosopher (1840-1893) | Geistlicher Rat (1886) | Roman Catholic seminary in Eichstätt (1843-1924), Willibald-Gymnasium Eichstätt | Wemding: July 31

German chemist (1840-1912) | Bovenden: July 31, 1840 - June 15, 1912 | Ernst Schulze | Bovenden: July 31, 1840 - June 15, 1912

German chemist and university teacher (1837-1922) | University of Tübingen, University of Giessen | Eudorf: July 31, 1837 - Giessen: March 16, 1922

Chilean university teacher | Talca: July 31, 1837 - Santiago: May 8, 1889 | José Ignacio Vergara (Jose Ignacio Vergara) | Talca: July 31, 1837 - Santiago: May 8, 1889

American chemist, soldier, botanist and university teacher (1826 – 1886) | Fellow of the American Academy of Arts and Sciences, Eisenmann Medal (2002)

German astronomer (1826-1895) | Eberswalde: July 31, 1826 - Kiel: March 11, 1895 | Ernst Meissel | Eberswalde: July 31, 1826 - Kiel: March 11, 1895

Czech physicist, mathematician and educator (1819–1904) | Písek: July 31, 1819 - New Town: October 10, 1904 | Ignác Axamit (Ignac Axamit) | Písek: July

American artillerist, inventor, ordnance specialist, and career United States Army officer (1816–1871) | United States Military Academy | Salem: July 31

Irish mathematician, engineer and writer (1810–1880) | Leiden: July 31, 1810 - London: December 9, 1880 | Oliver Byrne | Leiden: July 31, 1810 - London

Swedish-US engineer (1803-1889) | Rumford Prize (1862), National Inventors Hall of Fame (1993) | Färnebo församling: July 31, 1803 - New York City: March 8, 1889

German chemist (1800-1882) | Copley Medal (1872), Cothenius Medal (1880), Knight of the Legion of Honour, Bavarian Maximilian Order for Science and Art (1853)

Russian engineer (1795-1880) | Order of Saint Stanislaus, 3rd class, Order of Saint Anna, 2nd class, Order of St. Vladimir, 3rd class (1861) | Saint Petersburg

Scottish mathematician (1777-1815) | Spence's function | Greenock: July 31, 1777 - Glasgow: May 22, 1815 | William Spence | Greenock: July 31, 1777 - Glasgow

Danish politician (1769-1808) | University of Copenhagen | Viborg: July 31, 1769 - Copenhagen: May 17, 1808 | Carl Gottlob Rafn | Viborg: July 31, 1769

French chemist (1761-1797) | Bayonne: July 31, 1761 - Paris: July 21, 1797 | Bertrand Pelletier | Bayonne: July 31, 1761 - Paris: July 21, 1797

born 1752; died 1793 | Zurich: July 31, 1752 - Zurich: September 13, 1793 | Heinrich Corrodi | Zurich: July 31, 1752 - Zurich: September 13, 1793

German philosopher and historian | University of Göttingen | Hemmoor: July 31, 1747 - Göttingen: May 1, 1810 | Christoph Meiners | Hemmoor: July 31, 1747

German mathematician | University of Lausanne, University of Bern, University of Basel | Büdingen: July 31, 1712 - August 21, 1757 | Johann Samuel König

Genevan mathematician (1704-1752) | Fellow of the Royal Society (1749) | Cramer's rule, Cramer's paradox, Cramer-Castillon's problem | University of Geneva

Japanese Buddhist monk and calligrapher, the founder of the Shingon school (774–835) | Sangō Shiiki, Tenrei Banshō Meigi, Fūshinjō, Bunkyō Hifuron