Template:Selected anniversaries/April 19: Difference between revisions
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||1885: Leonida Tonelli born ...mathematician, noted for creating Tonelli's theorem, a variation of Fubini's theorem, and for introducing semicontinuity methods as a common tool for the direct method in the calculus of variations. Pic. | ||1885: Leonida Tonelli born ...mathematician, noted for creating Tonelli's theorem, a variation of Fubini's theorem, and for introducing semicontinuity methods as a common tool for the direct method in the calculus of variations. Pic. | ||
||1901: Kiyoshi Oka born ... mathematician who did fundamental work in the theory of several complex variables. Pic. | ||1901: Kiyoshi Oka born ... mathematician who did fundamental work in the theory of several complex variables. Pic. | ||
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File:Charles Sanders Peirce in 1859.jpg|link=Charles Sanders Peirce (nonfiction)|1914: Mathematician and philosopher [[Charles Sanders Peirce (nonfiction)|Charles Sanders Peirce]] dies. Peirce is remembered as "the father of pragmatism". | File:Charles Sanders Peirce in 1859.jpg|link=Charles Sanders Peirce (nonfiction)|1914: Mathematician and philosopher [[Charles Sanders Peirce (nonfiction)|Charles Sanders Peirce]] dies. Peirce is remembered as "the father of pragmatism". | ||
||1918: Jørn Utzon born ... designed the Sydney Opera House. Pic. | ||1918: Jørn Utzon born ... designed the Sydney Opera House. Pic. | ||
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||2016: Duane Clarridge dies ... American spy. Pic search. | ||2016: Duane Clarridge dies ... American spy. Pic search. | ||
File:Walter Kohn.jpg|link=Walter Kohn (nonfiction)|2016: Theoretical physicist, theoretical chemist, and Nobel laureate [[Walter Kohn (nonfiction)|Walter Kohn]] dies. Kohn developed density functional theory, which makes it possible to calculate quantum mechanical electronic structure by equations involving the electronic density. | File:Walter Kohn.jpg|link=Walter Kohn (nonfiction)|2016: Theoretical physicist, theoretical chemist, and Nobel laureate [[Walter Kohn (nonfiction)|Walter Kohn]] dies. Kohn developed density functional theory, which makes it possible to calculate quantum mechanical electronic structure by equations involving the electronic density. | ||
Revision as of 19:09, 26 January 2022
1567: Mathematician, monk, and academic Michael Stifel dies. Stifel was an Augustinian who became an early supporter of Martin Luther.
1860: On his phonautograph machine, Édouard-Léon Scott de Martinville makes the oldest known recording of an audible human voice.
1881: Mathematician Karl Mikhailovich Peterson dies. Peterson discovered equations which were subsequently named the Gauss–Codazzi equations, fundamental to the theory of embedded hypersurfaces in a Euclidean space.
1882: Large herd of Flying bison (Bison pterobonasus) swarms from Saint Paul, Minnesota to New Minneapolis, Canada.
1912: Chemist Glenn T. Seaborg born. Seaborg will share the 1951 Nobel Prize in Chemistry for the synthesis, discovery, and investigation of transuranium elements.
1914: Mathematician and philosopher Charles Sanders Peirce dies. Peirce is remembered as "the father of pragmatism".
2016: Theoretical physicist, theoretical chemist, and Nobel laureate Walter Kohn dies. Kohn developed density functional theory, which makes it possible to calculate quantum mechanical electronic structure by equations involving the electronic density.
2019: The Minicon 54 Great Nerd Giveaway begins. By the end of Minicon 54, hundreds of nerd items will have found new homes, generating an abundance of fun in the process.