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Julius Petersen information


Julius Petersen.

Julius Peter Christian Petersen (16 June 1839, Sorø, West Zealand – 5 August 1910, Copenhagen) was a Danish mathematician. His contributions to the field of mathematics led to the birth of graph theory.

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Julius Petersen

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Julius Peter Christian Petersen (16 June 1839, Sorø, West Zealand – 5 August 1910, Copenhagen) was a Danish mathematician. His contributions to the field...

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Petersen graph

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counterexample for many problems in graph theory. The Petersen graph is named after Julius Petersen, who in 1898 constructed it to be the smallest bridgeless...

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East Baltic race

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source of German Romanticism. Also in the Third Reich, philologist Julius Petersen wrote that Ludwig Tieck's Romanticism might have been promoted by his...

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Kronprinsessegade 4

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adaption carried out in 1912 by Gotfred Tvede for antiques dealer Carl Julius Petersen. Danske Kvinders Velfærd (DKV), a Christian-social organisation for...

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Petersen family

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named after Danish mathematician Julius Petersen, the namesake of the Petersen graph. Any of the graphs in the Petersen family can be transformed into any...

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Petersen

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Christine Petersen, Danish educator Julius Petersen, Danish mathematician Julius Petersen, Literary scholar and university professor Rodney L. Petersen, American...

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Johannes Hjelmslev

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Originally named Johannes Trolle Petersen, he changed his patronymic to the surname Hjelmslev to avoid confusion with Julius Petersen. Some of his results are...

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Aalborg Teater

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in Aalborg, Denmark. Built in 1878, it was subsequently modified by Julius Petersen and was remodeled in 2000. Its address is still Jernbanegade (Railway...

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Pierre Wantzel

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textbook. Before that, it seems to have been mentioned only once, by Julius Petersen, in his doctoral thesis of 1871. It was probably due to an article...

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Four color theorem

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by Percy Heawood, and in 1891, Tait's proof was shown incorrect by Julius Petersen—each false proof stood unchallenged for 11 years. In 1890, in addition...

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Willy Gretor

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Willy Gretor, born Vilhelm Rudolf Julius Petersen (16 July 1868, in Wundlacken Castle, near Königsberg – 31 July 1923, in Copenhagen), was a Danish painter...

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Robert Stumpfl

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habilitation at the University of Berlin in 1936 under the supervision of Julius Petersen. His thesis for the habilitation, Kultspiele der Germanen als Ursprung...

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Graph factorization

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is 2-factorable, then it has to be 2k-regular for some integer k. Julius Petersen showed in 1891 that this necessary condition is also sufficient: any...

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Zacharias Dase

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had very little knowledge of mathematical theory. The mathematician Julius Petersen tried to teach him some of Euclid's theorems, but gave up the task...

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Glossary of graph theory

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In a tree, this must be a leaf. Petersen 1.  Julius Petersen (1839–1910), Danish graph theorist. 2.  The Petersen graph, a 10-vertex 15-edge graph frequently...

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List of conjectures

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conjecture number theory Ludvig Oppermann 12 Petersen coloring conjecture graph theory Julius Petersen 52 Pierce–Birkhoff conjecture real algebraic geometry...

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Ludvig Sylow

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Sylow exchanged nine letters with Julius Petersen who, at this time, was working on his doctoral dissertation. Petersen sought Sylow's advice about the...

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List of Danes

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speed of light Asger Skovgaard Ostenfeld (1866–1931), civil engineer Julius Petersen (1839–1910), mathematician Ragna Rask-Nielsen (1900–1998), biochemist...

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University of Copenhagen

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Thiele (1838–1910), Danish astronomer, actuary and mathematician Julius Petersen (1839–1910), Danish mathematician Eugenius Warming (1841–1924), Danish...

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Julius Malema

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Julius Sello Malema (born 3 March 1981) is a South African politician. He is the founder and leader of the Economic Freedom Fighters (EFF), a populist...

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Gerda Madvig

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models, but also famous people, both contemporaries, like professor Julius Petersen, and deceased, such as the composer Frédéric Chopin. As a sculptor...

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Paul Heyse

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Britannica. Vol. 13 (11th ed.). Cambridge University Press. p. 438. Julius Petersen: Die Wissenschaft von der Dichtung, Berlin 1944, p 291. "Paul von Heyse"...

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