Template:Selected anniversaries/February 4: Difference between revisions

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||1921: Lotfi Zadeh born ... mathematician and computer scientist and founder of fuzzy logic https://www.nytimes.com/2017/09/11/science/lotfi-zadeh-father-of-mathematical-fuzzy-logic-dies-at-96.html
||1921: Lotfi Zadeh born ... mathematician and computer scientist and founder of fuzzy logic https://www.nytimes.com/2017/09/11/science/lotfi-zadeh-father-of-mathematical-fuzzy-logic-dies-at-96.html
File:Karl Menger 1970.jpg|link=Karl Menger (nonfiction)|1923: Mathematician [[Karl Menger (nonfiction)|Karl Menger]] uses [[scrying engine]] techniques to attend virtual lecture by [[Donald Knuth (nonfiction)|Donald Knuth]].


||1925: Christopher Zeeman born ... mathematician and academic. His main contributions to mathematics were in topology, particularly in knot theory, the piecewise linear category, and dynamical systems. Pic.
||1925: Christopher Zeeman born ... mathematician and academic. His main contributions to mathematics were in topology, particularly in knot theory, the piecewise linear category, and dynamical systems. Pic.
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||1959: Robert Emerson dies ... scientist noted for his discovery that plants have two distinct photosynthetic reaction centers.
||1959: Robert Emerson dies ... scientist noted for his discovery that plants have two distinct photosynthetic reaction centers.
File:Val Fitch.jpg|link=Val Logsdon Fitch (nonfiction)|1965: Physicist, academic, and [[APTO]] field engineer  [[Val Logsdon Fitch (nonfiction)|Val Logsdon Fitch]] visits the [[Nested Radical]] coffeehouse in [[New Minneapolis, Canada]], where he gives an impromptu lecture on the decay of K-mesons as evidence that the reactions of subatomic particles are not indifferent to time.


||1967: Ignaz "Igo" Etrich born ... flight pioneer, pilot and fixed-wing aircraft developer. Pic: https://cs.wikipedia.org/wiki/Igo_Etrich
||1967: Ignaz "Igo" Etrich born ... flight pioneer, pilot and fixed-wing aircraft developer. Pic: https://cs.wikipedia.org/wiki/Igo_Etrich
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||1989: Morton Landers Curtis dies ... mathematician, an expert on group theory. Together with Gustav A. Hedlund and Roger Lyndon, he proved the Curtis–Hedlund–Lyndon theorem characterizing cellular automata as being defined by continuous equivariant functions on a shift space. Pic: search book cover.
||1989: Morton Landers Curtis dies ... mathematician, an expert on group theory. Together with Gustav A. Hedlund and Roger Lyndon, he proved the Curtis–Hedlund–Lyndon theorem characterizing cellular automata as being defined by continuous equivariant functions on a shift space. Pic: search book cover.
File:Donald Knuth.jpg|link=Donald Knuth (nonfiction)|1994: Computer scientist and mathematician [[Donald Knuth (nonfiction)|Donald Knuth]] invents new class of [[Gnomon algorithm functions]].


||1995: The Connect Four game was mathematically solved first by James D. Allen (Oct 1, 1988), and independently by Victor Allis (Oct 16, 1988). First player can force a win. Strongly solved by John Tromp's 8-ply database (Feb 4, 1995). Weakly solved for all boardsizes where width+height is at most 15 (Feb 18, 2006). *Wik  Pic.
||1995: The Connect Four game was mathematically solved first by James D. Allen (Oct 1, 1988), and independently by Victor Allis (Oct 16, 1988). First player can force a win. Strongly solved by John Tromp's 8-ply database (Feb 4, 1995). Weakly solved for all boardsizes where width+height is at most 15 (Feb 18, 2006). *Wik  Pic.

Revision as of 19:52, 19 January 2022