Heinrich Heesch (June 25, 1906 – July 26, 1995) was a German mathematician. He was born in Kiel and died in Hanover.
In Göttingen he worked on Group theory. In 1933 Heesch witnessed the National Socialist purges of university staff. Not willing to become a member of the National Socialist organization of university teachers as required, he resigned from his university position in 1935 and worked privately at his parents' home in Kiel until 1948.
During this time he did research on tilings. In 1955 Heesch began teaching at Leibniz University Hannover and worked on graph theory. In this period Heesch did pioneering work in developing methods for a computer-aided proof of the then unproved four color theorem. In particular, he was the first to investigate the notion of "discharging", which turned out to be a fundamental ingredient of the eventual computer-aided proof by Kenneth Appel and Wolfgang Haken.
Between 1967 and 1971, Heesch made several visits to the United States, where bigger and faster computers were available, working with Haken at University of Illinois at Urbana-Champaign and with Karl Durre and Yoshio Shimamoto at Brookhaven National Laboratory.
During the crucial phase of his project, the German national research fund DFG cancelled financial support. After the 1977 success of Appel and Haken, Heesch worked on refining and shortening their proof, even after his retirement.
HeinrichHeesch (June 25, 1906 – July 26, 1995) was a German mathematician. He was born in Kiel and died in Hanover. In Göttingen he worked on Group theory...
Heesch can refer to: Heesch, Netherlands, a town in the Bernheze municipality HeinrichHeesch (1906–1995), German mathematician Heesch's problem in mathematics...
four color problem remained unsolved for more than a century. In 1969 HeinrichHeesch published a method for solving the problem using computers. A computer-aided...
(1905–1979), physicist, co-invented the Geiger–Müller Counter 1928 HeinrichHeesch (1906–1995), mathematician, worked on Group theory Helmut Lemke (1907–1990)...
remains unsolved. During the 1960s and 1970s, German mathematician HeinrichHeesch developed methods of using computers to search for a proof. Notably...
Shubnikov and Nikolai Belov in their book Colored Symmetry (1964), and HeinrichHeesch and Otto Kienzle (1963). In Latin, tessella is a small cubical piece...
ferroelectricity, topological insulation. A major step was the work of HeinrichHeesch, who first rigorously established the concept of antisymmetry as part...
tessellations all satisfy the criterion. In 1963 the German mathematician HeinrichHeesch described the five types of tiles that satisfy the criterion. He shows...
HeinrichHeesch was the first person to formally postulate an antisymmetry operation in the context of examining the 3D space groups in 4D. Heesch's work...
supervised by Weise is Wolfgang Haken (1928–2022). Haken learned about HeinrichHeesch's contributions to the Four Color Problem and enthusiastically Weise's...
with HeinrichHeesch and Karl Durre on methods for a computer-aided proof of the four color theorem, using computer programs to apply Heesch's notion...
Harold S. M. Coxeter (Canada) Victor A. Frank-Kamenetsky (Russia) HeinrichHeesch (Germany) Kodi Husimi (Japan) Michael Longuet-Higgins (UK and [United...
Belov for relaunching the field of color symmetry after the work of HeinrichHeesch and H.J. Woods in the 1930s was largely ignored. However, they criticise...
Jena, from left to right: Hubert Cremer, Heinrich Grell, Wolfgang Krull, Friedrich Karl Schmidt, HeinrichHeesch, Egon Ullrich, Friedrich Wilhelm Levi,...
approached the airfield of Heesch and some of its pilots assumed it to be Volkel airfield. It is unlikely that the Heesch strip, built in October 1944...
ferroelectricity. These groups were introduced by HeinrichHeesch in 1929 and are therefore also called Heesch-Shubnikov groups today. Shubnikov was the author...
from 1933 to 1945 in the Uchtspringe State Mental Institution" Eckhard Heesch: Marylene. Ein behindertes Kind im Dritten Reich. ("Marylene. A Disabled...
Dominique; Duvette, Catherine; Marchand, Sylvie; Dorry, Mennat-Allah El; Heesch, Johan van (2020). "The End of the "green Oasis": Chronological Bayesian...
operation on the Po River Bellriva 1971 104.64 m (343 ft) 186 1AVista Reisen Heesch ENI 07001702 originally, the Holland Emerald, formerly Italia, Bonaventura...
exports to Syria and a Crusader-Ayyubid condominial mint 2018 Johan van Heesch – A new representation of the Antwerp mint (AD 1625) 2019 Sam Moorhead 2020...
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