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| ||529: First draft of the Corpus Juris Civilis (a fundamental work in jurisprudence) is issued by Eastern Roman Emperor Justinian I.
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| ||1658: Juan Eusebio Nieremberg dies ... mystic and philosopher.
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| ||1727: Michel Adanson born ... botanist, entomologist, and mycologist.
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| File:Thomas_Bayes.gif|link=Thomas Bayes (nonfiction)|1761: Mathematician, philosopher, and minister [[Thomas Bayes (nonfiction)|Thomas Bayes]] dies. He is remembered for having formulated a specific case of the theorem that bears his name: Bayes' theorem.
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| ||1789: Petrus Camper dies ... physician, anatomist, and physiologist.
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| File:Joseph_Fourier.jpg|link=Joseph Fourier (nonfiction)|1789: Mathematician and physicist [[Joseph Fourier (nonfiction)|Joseph Fourier]] uses early version of Fourier series analysis to detect and prevent [[crimes against mathematical constants]].
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| ||1805: Gabriel Gruber dies ... second Superior General of the Society of Jesus in Russia. Math, etc. Pic.
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| ||1805: Lewis and Clark Expedition: The Corps of Discovery breaks camp among the Mandan tribe and resumes its journey West along the Missouri River.
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| File:Hasan Tahsini.jpg|link=Hasan Tahsini (nonfiction)|1811: Astronomer, mathematician, and philosopher [[Hasan Tahsini (nonfiction)|Hasan Tahsini]] born. He will become one of the most prominent scholars of the Ottoman Empire of the 19th century. | | File:Hasan Tahsini.jpg|link=Hasan Tahsini (nonfiction)|1811: Astronomer, mathematician, and philosopher [[Hasan Tahsini (nonfiction)|Hasan Tahsini]] born. He will become one of the most prominent scholars of the Ottoman Empire of the 19th century. |
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| ||1746: Jacques Alexandre César Charles dies ... inventor, scientist, mathematician, and balloonist. Pic.
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| ||1827: Chemist John Walker sells the first friction match, which he invented the previous year.
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| ||1859: Jacques Loeb born ... physiologist and biologist. Messaging. Pic.
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| File:Ernst_Ruhmer,_Technical_World_cover_(1905).jpg|link=Ernst Ruhmer (nonfiction)|1860: Physicist and crime-fighter [[Ernst Ruhmer (nonfiction)|Ernst Ruhmer]] invents a camera which uses the light-sensitivity properties of selenium to record images from past and future events. This type of camera is popular with math photographers, notably [[Cantor Parabola]].
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| File:Erik Ivar Fredholm.jpg|link=Erik Ivar Fredholm (nonfiction)|1866: Mathematician [[Erik Ivar Fredholm (nonfiction)|Erik Ivar Fredholm]] born. He will introduce and analyze a class of integral equations now called Fredholm equations. Fredholm's work on integral equations and operator theory will anticipate the theory of Hilbert spaces.
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| File:Niles Cartouchian.jpg|link=Niles Cartouchian|1867: Gem detective [[Niles Cartouchian]] works with [[Hasan Tahsini (nonfiction)|Hasan Tahsini]] to recover stolen shipment of [[Time crystal (nonfiction)|time crystals (nonfiction)]].
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| ||1882: Hermann Pokorny born. He was a World War I Austro-Hungarian Army cryptologist whose work with Russian ciphers contributed substantially to Central Powers victories over Russia. Pic.
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| File:Paul Du Bois-Reymond Heidelberg.jpg|link=Paul du Bois-Reymond (nonfiction)|1889: Mathematician [[Paul du Bois-Reymond (nonfiction)|Paul David Gustav du Bois-Reymond]] dies. He worked on the theory of functions and in mathematical physics.
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| File:Pieter Rijke.jpg|link=Pieter Rijke (nonfiction)|1899: Physicist and academic [[Pieter Rijke (nonfiction)|Petrus Leonardus Rijke]] dies. He explored the physics of electricity, and is known for the Rijke tube (which turns heat into sound, by creating a self-amplifying standing wave). | | File:Pieter Rijke.jpg|link=Pieter Rijke (nonfiction)|1899: Physicist and academic [[Pieter Rijke (nonfiction)|Petrus Leonardus Rijke]] dies. He explored the physics of electricity, and is known for the Rijke tube (which turns heat into sound, by creating a self-amplifying standing wave). |
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| ||1903: Edwin Thomas Layton born ... Rear Admiral in the United States Navy, who is most noted for his work as an intelligence officer during and before World War II.
| | File:Tim_Cochran_Multnomah_Falls_Oregon_July_16_2012.jpg|link=Tim Cochran (nonfiction)|2014: Mathematician and academic [[Tim Cochran (nonfiction)|Tim Cochran]] born. He will contribute to topology, especially low-dimensional topology, the theory of knots and links and associated algebra. |
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| ||1914: Heinz Billing born ... physicist and computer scientist, widely considered a pioneer in the construction of computer systems and computer data storage, who built a prototype laser interferometric gravitational wave detector.
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| ||1921: Feza Gürsey born ... mathematician and physicist.
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| ||1927: The first long-distance public television broadcast (from Washington, D.C., to New York City, displaying the image of Commerce Secretary Herbert Hoover).
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| ||1928: Alexander Aleksandrovich Bogdanov dies ... physician, philosopher, science fiction writer, and revolutionary. Pic.
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| ||1933: Prohibition in the United States is repealed for beer of no more than 3.2% alcohol by weight, eight months before the ratification of the XXI amendment. (Now celebrated as National Beer Day in the United States of America)
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| ||1934: Ernst Paul Heinz Pruefer dies ... mathematician born in Wilhelmshaven. His major contributions were on abelian groups, algebraic numbers, knot theory and Sturm–Liouville theory. Pic.
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| ||1941: Lazăr Edeleanu dies ... chemist ... known for being the first chemist to synthesize amphetamine at the University of Berlin and for inventing the modern method of refining crude oil.
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| ||1955: Tim Cochran born ... mathematician and academic.
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| ||1964: IBM announces the System/360.
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| ||1969: The Internet's symbolic birth date: Publication of RFC 1.
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| ||1971: President Richard Nixon announces his decision to quicken the pace of Vietnamization.
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| ||1976: Member of Parliament and suspected spy John Stonehouse resigns from the Labour Party (UK) after being arrested for faking his own death.
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| ||1978: Development of the neutron bomb is canceled by President Jimmy Carter.
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| ||1980: During the Iran hostage crisis, the United States severs relations with Iran.
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| ||1983: During STS-6, astronauts Story Musgrave and Don Peterson perform the first Space Shuttle spacewalk.
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| ||1989: Soviet submarine Komsomolets sinks in the Barents Sea off the coast of Norway killing 42 sailors.
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| ||1990: Iran–Contra affair: John Poindexter is found guilty of five charges for his part in the scandal (the conviction is later reversed on appeal).
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| ||1986: Leonid Kantorovich dies ... mathematician and economist.
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| ||1994: Agathe Uwilingiyimana assassinated ... chemist, academic, and politician, Prime Minister of Rwanda.
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| File:Donald Sarason 2003.jpg|link=Donald Sarason (nonfiction)|1995: Mathematician and crime-fighter [[Donald Sarason (nonfiction)|Donald Erik Sarason]] combines Hardy space theory with Vanishing mean oscillation (VMO); in the process, he will discover radical new techniques for detecting and preventing [[crimes against mathematical constants]]. | |
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| File:Cantor Parabola.jpg|link=Cantor Parabola|1995: Math photographer [[Cantor Parabola]] takes a series of photographs which capture temporal superimpositions from physicist and academic [[Pieter Rijke (nonfiction)|Petrus Leonardus Rijke]] in the form of a self-amplifying standing wave.
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| ||2001: Mars Odyssey is launched.
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| ||2009: Mathematician and academic Leonard E. "Len" Gillman dies. He and Nathan Fine defined remote points and showed that if the continuum hypothesis holds, then the real line (or any separable Tychonoff space that is not pseudocompact) has remote points. Pic: https://www.maa.org/about-maa/governance/maa-presidents/leonard-gillman-1987-1988-maa-president
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| File:Dave_Arneson.png|link=Dave Arneson (nonfiction)|2009: Game designer [[Dave Arneson (nonfiction)|Dave Arneson]] dies. He co-created the pioneering role-playing game [[Dungeons & Dragons (nonfiction)|Dungeons & Dragons]] with Gary Gygax. | | File:Dave_Arneson.png|link=Dave Arneson (nonfiction)|2009: Game designer [[Dave Arneson (nonfiction)|Dave Arneson]] dies. He co-created the pioneering role-playing game [[Dungeons & Dragons (nonfiction)|Dungeons & Dragons]] with Gary Gygax. |
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| ||2010: Peter H. Schönemann dies ... psychometrician and statistical expert. He was professor emeritus in the Department of Psychological Sciences at Purdue University. His research interests included multivariate statistics, multidimensional scaling and measurement, quantitative behavior genetics, test theory and mathematical tools for social scientists. Schönemann was a persistent critic of what he considered to be scientifically sanctioned racism in psychology. Pic: http://ferris-pages.org/ISAR/schonemann-obit/
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| ||2014: James Alexander "Sandy" Green dies ... mathematician and Professor at the Mathematics Institute at the University of Warwick, who worked in the field of representation theory. Pic: https://alchetron.com/Sandy-Green-(mathematician)
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