Template:Selected anniversaries/April 4: Difference between revisions
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File:Dave the Gamer.jpg|link=Dave the Gamer|1977: [[Dave the Gamer]] announces "buy one, get one free" sale on all lucky dice in the store. | File:Dave the Gamer.jpg|link=Dave the Gamer|1977: [[Dave the Gamer]] announces "buy one, get one free" sale on all lucky dice in the store. | ||
||1981: Carl Ludwig Siegel dies ... mathematician specializing in number theory and celestial mechanics. He is known for, amongst other things, his contributions to the Thue–Siegel–Roth theorem in Diophantine approximation and the Siegel mass formula for quadratic forms. | ||1981: Carl Ludwig Siegel dies ... mathematician specializing in number theory and celestial mechanics. He is known for, amongst other things, his contributions to the Thue–Siegel–Roth theorem in Diophantine approximation and the Siegel mass formula for quadratic forms. Pic. | ||
||1983: Space Shuttle Challenger makes its maiden voyage into space. | ||1983: Space Shuttle Challenger makes its maiden voyage into space. | ||
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||2001: Ed "Big Daddy" Roth dies ... artist, cartoonist, illustrator, pinstriper and custom car designer and builder who created the hot rod icon Rat Fink and other characters. Roth was a key figure in Southern California's Kustom Kulture and hot rod movement of the late 1950s and 1960s. | ||2001: Ed "Big Daddy" Roth dies ... artist, cartoonist, illustrator, pinstriper and custom car designer and builder who created the hot rod icon Rat Fink and other characters. Roth was a key figure in Southern California's Kustom Kulture and hot rod movement of the late 1950s and 1960s. | ||
||2004: Boris Levitan dies ... mathematician known in particular for his work on almost periodic functions, and Sturm–Liouville operators, especially, on inverse scattering. | ||2004: Boris Levitan dies ... mathematician known in particular for his work on almost periodic functions, and Sturm–Liouville operators, especially, on inverse scattering. Pic. | ||
||2007: Karen Spärck Jones dies ... computer scientist and academic. | ||2007: Karen Spärck Jones dies ... computer scientist and academic. | ||
Revision as of 21:20, 6 February 2019
1807: Astronomer, freemason, and writer Joseph Jérôme Lefrançois de Lalande dies. As a lecturer and writer Lalande helped popularize astronomy. His planetary tables were the best available up to the end of the 18th century.
1809: Mathematician Benjamin Peirce born. He will make contributions to celestial mechanics, statistics, number theory, algebra, and the philosophy of mathematics; he will become known for the statement that "Mathematics is the science that draws necessary conclusions".
1826: Electrical engineer Zénobe Gramme born. He will invent the first usefully powerful electric motor.
1842: Mathematician Édouard Lucas born. He will study the Fibonacci sequence; the related Lucas sequences and Lucas numbers will be named after him.
1901: Charles Hermite publishes paper on number theory as deterrent to crimes against mathematical constants.
1923: Mathematician and philosopher John Venn dies. He invented the Venn diagram, now widely used set theory, probability, logic, statistics, and computer science.
1976: Engineer and theorist Harry Nyquist dies. He did early theoretical work on determining the bandwidth requirements for transmitting information, laying the foundations for later advances by Claude Shannon, which led to the development of information theory.
1977: Dave the Gamer announces "buy one, get one free" sale on all lucky dice in the store.
2016: Steganographic analysis of Tequila Sunrise unexpectedly reveals "at least five hundred and twelve kilobytes" of previously unknown Gnomon algorithm functions.