• Thumbnail for Hellmuth Kneser
    Hellmuth Kneser (16 April 1898 – 23 August 1973) was a German mathematician who made notable contributions to group theory and topology. His most famous...
    4 KB (368 words) - 18:06, 8 November 2024
  • Kneser is a surname. Notable people with the surname include: Adolf Kneser (1862–1930), mathematician Hellmuth Kneser (1898–1973), mathematician, son...
    283 bytes (74 words) - 00:34, 9 September 2023
  • Thumbnail for Adolf Kneser
    is the father of the mathematician Hellmuth Kneser and the grandfather of the mathematician Martin Kneser. Kneser is known for the first proof of the...
    4 KB (316 words) - 07:22, 25 June 2024
  • Thumbnail for Martin Kneser
    Martin Kneser (21 January 1928 – 16 February 2004) was a German mathematician. His father Hellmuth Kneser and grandfather Adolf Kneser were also mathematicians...
    2 KB (146 words) - 19:37, 2 November 2024
  • differential equation is oscillating or not; the other one, named after Hellmuth Kneser, is about the topology of the set of all solutions of an initial value...
    5 KB (859 words) - 15:59, 17 August 2024
  • In mathematics, the Radó–Kneser–Choquet theorem, named after Tibor Radó, Hellmuth Kneser and Gustave Choquet, states that the Poisson integral of a homeomorphism...
    7 KB (1,310 words) - 17:08, 22 December 2021
  • Another proof of this kind was obtained by Hellmuth Kneser in 1940 and simplified by his son Martin Kneser in 1981. Without using countable choice, it...
    50 KB (7,606 words) - 15:45, 20 September 2024
  • Thumbnail for Oberwolfach Research Institute for Mathematics
    regained government funding in the 1950s. After Süss's death in 1958, Hellmuth Kneser was briefly director before Theodor Schneider permanently took over...
    6 KB (705 words) - 18:23, 21 October 2024
  • 93 (2): 129–213. doi:10.1016/0001-8708(92)90027-I. MR 1164707. Kneser, Hellmuth; Kneser, Martin (1960). "Reell-analytische Strukturen der Alexandroff-Halbgeraden...
    13 KB (1,906 words) - 15:30, 12 September 2024
  • is based on normal surface techniques originated by Hellmuth Kneser. Existence was proven by Kneser, but the exact formulation and proof of the uniqueness...
    3 KB (396 words) - 12:50, 3 August 2024
  • disk. This theorem was thought to be proven by Max Dehn (1910), but Hellmuth Kneser (1929, page 260) found a gap in the proof. The status of Dehn's lemma...
    6 KB (592 words) - 13:13, 1 June 2024
  • Thumbnail for David Hilbert
    Hedrick Ernst Hellinger Wallie Hurwitz Margarete Kahn Oliver Kellogg Hellmuth Kneser Robert König Emanuel Lasker Klara Löbenstein Charles Max Mason Alexander...
    59 KB (7,101 words) - 20:26, 14 October 2024
  • Thumbnail for Reinhold Baer
    he was at Göttingen in 1922 he was influenced by Emmy Noether and Hellmuth Kneser. In 1924 he won a scholarship for specially gifted students. Baer wrote...
    6 KB (579 words) - 07:46, 1 March 2024
  • Thumbnail for Diffeomorphism
    the open disc. An elegant proof was provided shortly afterwards by Hellmuth Kneser. In 1945, Gustave Choquet, apparently unaware of this result, produced...
    25 KB (4,165 words) - 15:27, 23 February 2024
  • function (now known as a half-exponential function) was studied by Hellmuth Kneser in 1950. The solutions of f(f(x)) = x over R {\displaystyle \mathbb...
    6 KB (565 words) - 06:52, 16 May 2024
  • Thumbnail for Constantin Carathéodory
    others. Handwritten letters by Carathéodory to Albert Einstein and Hellmuth Kneser, as well as photographs of the Carathéodory family, are on display...
    43 KB (4,812 words) - 03:20, 23 October 2024
  • Thumbnail for Max Dehn
    He also stated Dehn's lemma, but an error was found in his proof by Hellmuth Kneser in 1929. The result was proved in 1957 by Christos Papakyriakopoulos...
    12 KB (1,348 words) - 17:38, 16 May 2024
  • German universities: Max Dehn, Herbert Seifert, Hans Freudenthal, Hellmuth Kneser, Georg Feigl, Kurt Reidemeister, William Threlfall, Heinrich Tietze...
    13 KB (1,445 words) - 19:52, 11 June 2024
  • Kempe Johannes Kepler Felix Klein Alfred Kneschke Adolf Kneser Hellmuth Kneser Martin Kneser Herbert Koch Karl-Rudolf Koch Rudolf Kochendörffer Leo Königsberger...
    14 KB (1,105 words) - 06:05, 8 October 2024
  • Tübingen, where he stayed on to study for his PhD under Erich Kamke and Hellmuth Kneser, defending his thesis in 1956. In 1986–1992 Walter held the post of...
    3 KB (235 words) - 15:07, 26 September 2022
  • Reidemeister 1948–1952: Erich Kamke 1953, 1955: Georg Nöbeling 1954: Hellmuth Kneser 1956: Karl Heinrich Weise 1957: Emanuel Sperner 1958: Gottfried Köthe...
    6 KB (564 words) - 15:36, 23 October 2024
  • Hopf (1894–1971) Adolf Hurwitz (1859–1919) Felix Klein (1849–1925) Hellmuth Kneser (1898–1973) Leopold Kronecker (1823–1891) Ernst Kummer (1810–1893)...
    6 KB (580 words) - 18:12, 24 June 2024
  • ideals generalizing Irreducible elements. According to a theorem of Hellmuth Kneser and John Milnor, every compact, orientable 3-manifold is the connected...
    7 KB (1,133 words) - 14:39, 22 June 2024
  • Thumbnail for Normal surface
    quadrilaterals by a tube. The concept of normal surfaces is due to Hellmuth Kneser, who utilized it in his proof of the prime decomposition theorem for...
    3 KB (361 words) - 02:12, 28 September 2024
  • axioms was also becoming standard. Veblen-Whitehead did not assume, as Kneser earlier had, that manifolds are second countable. The term "separable manifold"...
    43 KB (1,178 words) - 15:16, 19 October 2024
  • demonstrated in 1950 by Hellmuth Kneser. Relying on the elegant functional conjugacy theory of Schröder's equation, for his proof, Kneser had constructed the...
    16 KB (2,694 words) - 07:53, 17 October 2024
  • Hellmut Kirst (1914–1989), German novelist and the author of 46 books Hellmut Kneser (1898–1973), Baltic German mathematician who made notable contributions...
    3 KB (446 words) - 18:56, 3 November 2024