Valentin Kalan

Croatian inventor and entrepreneur | Entrepreneur of the Year (2017), Order of Danica Hrvatska (2014) | Vern University of Applied Sciences | Livno: February

Royal Holloway, University of London, Panteion University | February 12, 1986 - Ermenonville: July 2, 1778 | Peter D. Kapsaskis | February 12, 1986

American mathematician | Fellow of the American Mathematical Society (2021), Fellow of the Association for Women in Mathematics (2024) | Harvard University

Honored Jurist of Ukraine | Khmelnytskyi University of Management and Law | February 12, 1980 - Nový Bor: January 1, 1864 | Volodymyr Vatras | February 12

Faculty of Philosophy, Taras Shevchenko National University Kyiv | February 12, 1972 - Hamburg: November 2, 1693 | Wachtanh Kebuladse | February 12, 1972

Georgia Tech, Jordan University of Science and Technology, University of Colorado | February 12, 1967 - Hastings-on-Hudson: January 4, 1882 | Ali Malkawi

Turkish mathematician | Boğaziçi University, Rutgers University | Istanbul: February 12, 1966 - Hollywood: March 4, 1949 | Tuna Altinel | Istanbul: February

Norwegian scientist | University of Oslo | Røros Municipality: February 12, 1962 - Prague: February 8, 1975 | Dag Rune Olsen | Røros Municipality: February

Ukrainian scientist | Lviv University | Iampil: February 12, 1958 - Rio de Janeiro: October 21, 1988 | Rostyslav Martynyak | Iampil: February 12, 1958 - Rio de

Austrian philosopher | February 12, 1957 - Yokosuka: July 23, 1990 | Wilhelm Berger | February 12, 1957 - Yokosuka: July 23, 1990

American businesswoman | Harvard University | Mansfield: February 12, 1957 - January 1, 1154 | Janet Emerson Bashen | Mansfield: February 12, 1957 - January 1, 1154

German mathematician | Technical University of Munich | Peißenberg: February 12, 1956 - June 2, 2015 | Albert Gilg | Peißenberg: February 12, 1956 - June 2

researcher | University of Oviedo | Corollos: February 12, 1956 - Saint Petersburg: May 23, 2002 | Rosa María Menéndez López (Rosa Maria Menendez Lopez)

German professor | University of Stuttgart | Stuttgart: February 12, 1955 - Budapest: November 26, 1916 | Barbara Lenz | Stuttgart: February 12, 1955

creator of Pretty Good Privacy | Internet Hall of Fame (2012), Norbert Wiener Award for Social and Professional Responsibility (1996), EFF Award (1995)

Russian mathematician | Siberian Federal University | February 12, 1954 - July 12, 2017 | Sergej V. Znamenskij | February 12, 1954 - July 12, 2017 | Siberian

Indian computer scientist, best known for his "Hole in the Wall" experiment | Leonardo Award (2012), TED Prize (2013) | Indian Institute of Technology Delhi

Bangladeshi academic and women-in-science advocate | Fellow of the Bangladesh Physical Society | University of Dhaka | Cumilla: February 12, 1951 - Sergiyev

Palestinian philosopher and activist | Four Freedoms Award – Freedom of Worship, Siegfried Unseld Preis (2010), Catalonia International Prize (2004) | Christ

German ophthalmologist | Free University Berlin | Ravensburg: February 12, 1949 - Groningen: February 21, 1961 | Theo Seiler | Ravensburg: February 12, 1949

American computer scientist, author, entrepreneur, futurist and inventor (born 1948) | National Inventors Hall of Fame (2002), National Medal of Technology and

politician | Merited Scientist of the Republic of Tatarstan, Republic of Tatarstan State Award for Science and Technology, Medal "In Commemoration of the

American economist, physicist, legal scholar, and libertarian theorist | Harvard University, University of Chicago | New York City: February 12, 1945 - City of

British mathematician | University of Cambridge, Trinity College | February 12, 1944 - Moscow: January 30, 1989 | Adrian Mathias | February 12, 1944 - Moscow

German analytical chemist | Clemens Winkler Medal For Analytical Chemistry (2011) | DASp-Diskussionstagung und Workshop Interpretation von Infrarot- und

Russian scientist | Pirogov Gold Medal (2023), Prizvanie Prize, Order of Friendship of Peoples, Order "For Merit to the Fatherland", 1st class, Medal "In

Chinese-American physicist | Fellow of the American Physical Society, honorary doctor of the Chinese University of Hong Kong, National Medal of Science (1988)

American mathematician | Abel Prize (2022), National Medal of Science (2004), Balzan Prize (2014), Wolf Prize in Mathematics (2010), King Faisal International

Soviet physicist (1937-2019) | Kurchatov Medal | MSU Faculty of Physics | Druzhkivka: February 12, 1937 - Moscow: January 3, 2019 | Leonid Ponomarev

American author, scientist | Brooklyn: February 12, 1937 - North Lauderdale: December 17, 2015 | Ira N. Levine | Brooklyn: February 12, 1937 - North

American physicist | Guggenheim Fellowship | Shimer College, University of Chicago | February 12, 1936 - February 8, 2025 | Roland Winston | February 12, 1936

February 12, 1936 - Springfield: May 30, 1911 | Csaba Baboss | February 12, 1936 - Springfield: May 30, 1911

mathematician and historian of mathematics | Kenneth O. May Prize, Singapore Women's Hall of Fame | National University of Singapore, University of Cambridge

Professor of astrophysics; civil rights activist and dissident (1936–2012) | Dwight Nicholson Medal for Outreach (1996), Robert F. Kennedy Human Rights Award

French physicist | honorary doctor of the Peoples' Friendship University of Russia (1998) | Science Faculty of Paris | Antony: February 12, 1930 - 12th

American physicist and chemist | Order of Honour | Moldova State University | Chișinău: February 12, 1928 - Saint Petersburg: March 25, 1888 | Isaac Bersuker

Syrian musicologist (1928-2003) | American University of Beirut | Latakia: February 12, 1928 - September 29, 2003 | Raoul Gregory Vitale | Latakia: February

Indian yoga mentor | Bihar: February 12, 1924 - Jammu and Kashmir: June 9, 1994 | Dhirendra Brahmachari | Bihar: February 12, 1924 - Jammu and Kashmir: June 9, 1994

American inventor and designer (1924–2010) | Stockton High School, Principia College, The Principia, Cranbrook Educational Community | Los Angeles: February

Irish computer programmer (1921-2006) | Women in Technology Hall of Fame (1997) | church school, Chestnut Hill College, J. W. Hallahan Catholic Girls High School

German physicist and politician (SED), MdV, Minister for Higher and Technical Education in the GDR (1919-2004) | Ehrenprofessur (1989), honorary doctorate

American theoretical physicist | Humboldt Prize, Josiah Willard Gibbs Lectureship (1960), National Medal of Science (1964), doctor honoris causa from the

German engineer and inventor of the smart card (1916-1981) | Technische Universität Berlin | Cologne: February 12, 1916 - Munich: July 4, 1981 | Helmut

German Australian mathematician (1914–1971) | Fellow of the Australian Academy of Science (1969) | Hanna Neumann conjecture, Varieties of Groups | University

German mathematician (1912–2003) | University of Göttingen, University of Münster | Neunkirchen: February 12, 1912 - November 10, 2003 | Hans Hermes

French mathematician (1908–1931) | Prix Francoeur (1931) | Herbrand universe, Herbrand–Ribet theorem, Herbrand interpretation, Herbrand's expansion

Finnish physicist (1902–1975) | February 12, 1902 - November 26, 1975 | Hilding Slätis (Hilding Slatis) | February 12, 1902 - November 26, 1975

1900-1948) Russian-American inventor | Diamond-Dunmore system | Massachusetts Institute of Technology | Minsk: February 12, 1900 - June 21, 1948 | Harry

Belgian-Dutch astronomer (1893-1970) | honorary doctorate from the University of Nice-Sophia Antipolis (1969), Bruce Medal (1951), Prix Jules Janssen (1966)

Italian mathematician (1889-1975) | Mathematical Prize of the Italian Academy of Sciences (1925) | Sapienza University of Rome | Rome: February 12, 1889

American pharmacist | Danville: February 12, 1885 - Novitiate of St. Isaac Jogues: November 11, 1974 | Chesta Dillard Dean | Danville: February 12, 1885

Russian spiritual philosopher, occult writer, theosophist (1879-1955) | Saint Petersburg: February 12, 1879 - Kalimpong: October 5, 1955 | Helena Roerich

French industrialist | National Inventors Hall of Fame (2007), Grand Cross of the Legion of Honour (1932) | Lycée Condorcet | 8th arrondissement of Paris

John Scott Award (1906) | February 12, 1873 - Berlin: July 26, 1935 | Byron E. Eldred | February 12, 1873 - Berlin: July 26, 1935 | John Scott Award (1906)

Danish philosopher | Østre Borgerdyd school | Randers: February 12, 1871 - Copenhagen: May 14, 1939 | Eduard Geismar | Randers: February 12, 1871

Japanese Fishery scientist and Oceanographer | Yamagata district: February 12, 1870 - January 12, 1922 | Kitahara Tasaku - 各務多作 | Yamagata district

British mathematician (1870–1954) | Conduction of Heat in Solids | The Glasgow Academy | Helensburgh: February 12, 1870 - Burradoo: November 11, 1954

American Mormon philosopher, theologian, and educator | University of Utah, University of Chicago | Salt Lake City: February 12, 1870 - Logan: January 1, 1921

American chemist and businessman (1869–1936) | honorary doctor of the University of Pennsylvania (1927) | University of Pennsylvania (1890), University of Jena (1892)

German-Russian Psychoanalyst and author | Saint Peter's School | Saint Petersburg: February 12, 1861 - Göttingen: February 5, 1937 | Lou Andreas-Salomé (Lou

Polish-born French epistemologist, chemist, and philosopher of science | Knight of the Legion of Honour | Lublin: February 12, 1859 - 8th arrondissement of

University of Santiago de Compostela, University of Valladolid | February 12, 1854 - January 24, 1867 | Eugenio Piñerúa Álvarez (Eugenio Pinerua Alvarez)

American engineer (1854–1941) | Norfolk: February 12, 1854 - Orange: August 30, 1941 | Stephen Henry Horgan | Norfolk: February 12, 1854 - Orange: August 30, 1941

Swedish chemist and oceanographer | Alexander Agassiz Medal (1924) | Uppsala University | Domkyrkoförsamlingen in Göteborg: February 12, 1848 - Johannebergs

Russian mathematician (1841–1897) | Constantin Medal | Moscow State University, Faculty of Physics and Mathematics of Moscow Imperial University | Yaroslavl

Italian philosopher and educationist (1837–1890) | University of Naples Federico II, Humboldt University of Berlin | Castellana Grotte: February 12, 1837

German chemist (1835–1908) | Amorbach: February 12, 1835 - Biebrich: December 31, 1908 | Heinrich Albert | Amorbach: February 12, 1835 - Biebrich: December 31, 1908

Order of Saint Michael, Knight Commander of the Order of St. Gregory the Great, Order of Franz Joseph | February 12, 1834 - Bonn: February 13, 1793 | Franz

American inventor (1830–1893) | National Inventors Hall of Fame (1997) | Westerly: February 12, 1830 - November 27, 1893 | Stephen Wilcox | Westerly

Russian educationalist | Faculty of Physics and Mathematics of Moscow Imperial University | Odesa: February 12, 1829 - Paris: May 27, 1890 | Victor Della-Vos

German biochemist (1826–1894) | Humboldt University of Berlin | Racibórz: February 12, 1826 - Berlin: June 28, 1894 | Moritz Traube | Racibórz: February

Indian social reformer (1824-1883) | Arya Samaj | Tankara: February 12, 1824 - Ajmer: October 30, 1883 | Dayananda Saraswati | Tankara: February 12, 1824

English naturalist and biologist (1809–1882) | Pour le Mérite for Sciences and Arts order (1868), Fellow of the Geological Society of London, Copley Medal

Italian engineer (1808–1887) | Lucca: February 12, 1808 - Capannori: September 13, 1887 | Felice Matteucci | Lucca: February 12, 1808 - Capannori: September 13, 1887

American abolitionist and actuary (1804-1885) | Yale University | Canaan: February 12, 1804 - November 22, 1885 | Elizur Wright | Canaan: February 12, 1804

German mathematician (1801-1879) | Rothensee: February 12, 1801 - Eberswalde: November 4, 1879 | Friedrich Wilhelm Schneider | Rothensee: February 12, 1801

February 12, 1792 - January 1, 1843 | Josef Ineichen | February 12, 1792 - January 1, 1843

American politician and businessman (1791-1883) | National Inventors Hall of Fame (2006) | New York City: February 12, 1791 - New York City: April 4, 1883

German scientist and philosopher (1788–1869) | University of Tübingen | Stuttgart: February 12, 1788 - Leipzig: January 19, 1869 | Carl Reichenbach

French scientist (1785-1838) | Foreign Member of the Royal Society (1826), 72 names on the Eiffel Tower | Paris Medical Faculty, École polytechnique, Lycée

1752-1825) | Argostoli: February 12, 1752 - Padua: February 14, 1825 | Angelo Dalla Decima | Argostoli: February 12, 1752 - Padua: February 14, 1825

Russian writer (1727-1805) | Moscow: February 12, 1727 - Moscow: March 27, 1805 | Fyodor Dmitriyev-Mamonov | Moscow: February 12, 1727 - Moscow: March 27, 1805

Danish polymath (1585-1629) | University of Copenhagen, University of Rostock, University of Wittenberg | Malmö: February 12, 1585 - Sorø: July 13, 1629

German astronomer (1551-1600) | Hennstedt: February 12, 1551 - Prague: August 15, 1600 | Nicolaus Reimers | Hennstedt: February 12, 1551 - Prague: August 15, 1600