• Thumbnail for Stefan Cohn-Vossen
    Stefan Cohn-Vossen (28 May 1902 – 25 June 1936) was a mathematician, specializing in differential geometry. He is best known for his collaboration with...
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  • these lectures and edited by Richard Courant and Otto Neugebauer for the first volume and Courant and Stefan Cohn-Vossen for the second. Some content...
    29 KB (3,346 words) - 14:10, 3 July 2025
  • Stefan Cohn-Vossen had originally formulated and proved the theorem in the case of two-dimensional manifolds, and Victor Toponogov had extended Cohn-Vossen's...
    9 KB (954 words) - 21:31, 11 November 2024
  • or diffeomorphic to R 2 {\displaystyle \mathbb {R} ^{2}} , by work of Cohn-Vossen from 1935. In three dimensions the conjecture holds due to a noncompact...
    5 KB (446 words) - 05:57, 28 May 2025
  • David Christiani Christopher Clavius Stephan Cohn-Vossen Paul Cohn Armin B. Cremers Peter Crüger Richard Dedekind Herbert von Denffer Christopher Deninger...
    14 KB (1,110 words) - 08:54, 30 June 2025
  • Thumbnail for Gauss circle problem
    Natick, Massachusetts: A K Peters. pp. 275–290. MR 1956254. Hilbert, D.; Cohn-Vossen, S. (1952). Geometry and the Imagination. New York, N. Y.: Chelsea Publishing...
    11 KB (1,634 words) - 14:34, 18 December 2024
  • Thumbnail for Focal conics
    W. Blaschke, Richard Courant, Springer-Verlag, 2013, ISBN 3642498485, S. 58. Glaeser-Stachel-Odehnal: p. 147 D. Hilbert, S. Cohn-Vossen:Geometry and the...
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  • Thumbnail for Möbius strip
    (1): 195–200. doi:10.2140/pjm.1990.143.195. MR 1047406. Hilbert, David; Cohn-Vossen, Stephan (1990). Geometry and the Imagination (2nd ed.). Chelsea. pp...
    88 KB (9,639 words) - 16:17, 5 July 2025
  • geometry have been proposed (see for example Coxeter 2003, Hilbert & Cohn-Vossen 1999, Greenberg 1980). These axioms are based on Whitehead, "The Axioms...
    38 KB (5,099 words) - 22:20, 24 May 2025
  • Philosophy. London. doi:10.4324/9780415249126-S036-1. ISBN 9780415250696. Vossen, Bas Van Der (2017). "Libertarianism". Oxford Research Encyclopedia of Politics...
    169 KB (16,743 words) - 18:41, 8 July 2025
  • Thumbnail for Differential geometry of surfaces
    between two points cannot have length greater than δ. Rigidity. In 1927 Cohn-Vossen proved that two ovaloids – closed surfaces with positive Gaussian curvature...
    129 KB (17,641 words) - 09:51, 24 June 2025
  • Thumbnail for Maximilian I, Holy Roman Emperor
    38, 41, 100, 266. Haemers 2014, pp. 50–64. Haemers 2014, pp. 279–290. Vossen, Carl (1982). Maria von Burgund: des Hauses Habsburg Kronjuwel (in German)...
    198 KB (21,719 words) - 21:42, 21 June 2025
  • Thumbnail for David Hilbert
    ISBN 978-0-87548-164-7. translated from the 10th German edition Hilbert, David; Cohn-Vossen, Stephan (1999). Geometry and Imagination. American Mathematical Society...
    60 KB (7,106 words) - 05:23, 1 July 2025
  • topology Wim Cohen (1923–2000), queueing theory Paul Cohn (1924–2006), algebraist Stephan Cohn-Vossen (1902–1936), differential geometry: 399  Ronald Coifman...
    179 KB (15,739 words) - 04:01, 5 July 2025
  • Cherubino [it] P'ei-Yuan Chou Leon Chwistek Louis Crelier Stephan Cohn-Vossen Richard Courant Georges Darmois Boris Delaunay Bruno de Finetti Béla Kerékjártó...
    118 KB (10,713 words) - 22:33, 4 July 2025
  • Thumbnail for Gear
    notes, archived from the original on 29 August 2008. Hilbert, David; Cohn-Vossen, Stephan (1952), Geometry and the Imagination (2nd ed.), New York: Chelsea...
    83 KB (11,269 words) - 09:54, 3 July 2025
  • Thumbnail for Immigration to the United States
    "26. The Libertarian Case for Open Borders". In Brennan, Jason; van der Vossen, Bas; Scmidtz, David (eds.). The Routledge Handbook of Libertarianism. New...
    357 KB (22,678 words) - 12:03, 10 July 2025
  • Thumbnail for Libertarianism in the United States
    the Wayback Machine. Journal of Libertarian Studies. 20 (1): 7. Van der Vossen, Bas (January 28, 2019). "Libertarianism" Archived September 11, 2020, at...
    194 KB (19,559 words) - 16:17, 9 July 2025
  • octonions, A K Peters, Ltd., pp. 34, ISBN 978-1-56881-134-5 Hilbert, David; Cohn-Vossen, S. (1999), Geometry and the imagination, AMS Bookstore, p. 147, ISBN 978-0-8218-1998-2...
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  • Thumbnail for Agriculture in California
    1094/pdis-03-19-0622-fe. PMID 31232653. S2CID 132900491. Úrbez-Torres, J. R.; Peduto, F.; Vossen, P. M.; Krueger, W. H.; Gubler, W. D. (2013). "Olive Twig and Branch Dieback:...
    339 KB (33,799 words) - 05:46, 28 June 2025
  • Symmetric Spaces, Academic Press, ISBN 0-12-338460-5 Hilbert, David; Cohn-Vossen, Stephan (1952), Geometry and the Imagination (2nd ed.), New York: Chelsea...
    70 KB (10,206 words) - 12:10, 30 April 2025