Kenneth Ira Appel (October 8, 1932 – April 19, 2013) was an American mathematician who in 1976, with colleague Wolfgang Haken at the University of Illinois... 10 KB (1,102 words) - 09:51, 1 January 2024 |
authors of Rog-O-Matic. Andrew Appel is the son of mathematician Kenneth Appel, who proved the Four-Color Theorem in 1976. Appel graduated summa cum laude... 5 KB (426 words) - 03:09, 1 December 2023 |
color theorem, first stated in 1852, but not proved until 1976 (by Kenneth Appel and Wolfgang Haken, using substantial computer assistance). In logic... 26 KB (2,768 words) - 00:05, 8 April 2024 |
problem using computers. A computer-aided proof produced in 1976 by Kenneth Appel and Wolfgang Haken makes fundamental use of the notion of "discharging"... 52 KB (6,395 words) - 20:16, 27 March 2024 |
Appel (born 1958), Dutch documentary filmmaker Karel Appel (1921–2006), Dutch painter Kenneth Appel (1932–2013), American mathematician Kevin Appel (born... 4 KB (504 words) - 17:12, 1 May 2024 |
validity. The term was coined by Thomas Tymoczko in 1979 in criticism of Kenneth Appel and Wolfgang Haken's computer-assisted proof of the four color theorem... 6 KB (822 words) - 11:22, 20 March 2024 |
ed.). Reading, Mass. [u.a.]: Addison-Wesley. ISBN 978-0-201-55406-9. Kenneth Appel; Wolfgang Haken (26 July 1976). "Every Planar Map is Four-Colorable"... 76 KB (8,663 words) - 08:03, 10 May 2024 |
be a fundamental ingredient of the eventual computer-aided proof by Kenneth Appel and Wolfgang Haken. Between 1967 and 1971, Heesch made several visits... 3 KB (283 words) - 16:41, 13 January 2023 |
to four, until the four color theorem was finally proved in 1976 by Kenneth Appel and Wolfgang Haken. The proof went back to the ideas of Heawood and... 67 KB (7,988 words) - 22:36, 13 May 2024 |
a prestigious mental hospital, under the care of psychiatrist Dr. Kenneth Appel. One month later, he was given permission to leave the institute to... 22 KB (3,090 words) - 07:13, 13 August 2023 |
Mumford conjecture geometric invariant theory Haboush's theorem 1976 Kenneth Appel and Wolfgang Haken Four color theorem graph colouring Traditionally... 35 KB (1,517 words) - 01:10, 13 February 2024 |
success of valid modern proofs, such as the first successful one by Kenneth Appel and Wolfgang Haken. Furthermore, the method is used in the proof of... 7 KB (948 words) - 08:33, 6 May 2024 |
Richard M. Karp for classifying many important NP-complete problems. Kenneth Appel and Wolfgang Haken for the four color theorem. Paul Seymour for generalizing... 20 KB (1,854 words) - 14:15, 28 December 2023 |
Peter H. Appel (born 1964) was the administrator of the Research and Innovative Technology Administration (RITA). From 2009 to 2011 Appel was the Obama... 5 KB (413 words) - 00:53, 30 April 2024 |
Mandelbrot publishes Les objets fractals, forme, hasard et dimension. 1976 – Kenneth Appel and Wolfgang Haken use a computer to prove the Four color theorem. 1981 –... 63 KB (7,723 words) - 16:16, 11 May 2024 |
professor in 1965, retiring in 1998. In 1976, together with colleague Kenneth Appel at the University of Illinois at Urbana-Champaign, Haken solved the... 7 KB (574 words) - 12:40, 8 January 2024 |
from) the standard axioms of set theory. In 1976, Wolfgang Haken and Kenneth Appel used a computer to prove the four color theorem. Andrew Wiles, building... 72 KB (9,743 words) - 16:46, 22 April 2024 |
Stratford California 1926 Edward Chandler, Tom Stow California 1927 Kenneth Appel, John Van Ryn Princeton 1928 Alan Herrington, Ralph McElvenny Stanford... 61 KB (429 words) - 15:02, 4 May 2024 |
Priest. Sivanthi Adithan, 76, Indian newspaper owner (Dina Thanthi). Kenneth Appel, 80, American mathematician, solved the four color theorem, esophageal... 182 KB (13,329 words) - 22:17, 14 April 2024 |
Westney - classical pianist Davide Zannoni - classical music composer Kenneth Appel - Mathematician proved four color theorem Boris Aronov - Computer scientist... 78 KB (6,453 words) - 21:19, 28 March 2024 |
Discovery is published posthumously. The four color theorem is proved by Kenneth Appel and Wolfgang Haken, the first major theorem to be proved using a computer... 11 KB (1,200 words) - 17:37, 8 October 2023 |
extra-large type are torsion-free and have solvable conjugacy problem (Kenneth Appel and Paul Schupp). Artin–Tits groups of extra-large type are biautomatic... 20 KB (2,995 words) - 09:20, 5 January 2024 |