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...

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...

David Christiani Christopher Clavius Stephan Cohn-Vossen Paul Cohn Armin B. Cremers Peter Crüger Richard Dedekind Herbert von Denffer Christopher Deninger...

geometry have been proposed (see for example Coxeter 2003, Hilbert & Cohn-Vossen 1999, Greenberg 1980). These axioms are based on Whitehead, "The Axioms...

W. Blaschke, Richard Courant, Springer-Verlag, 2013, ISBN 3642498485, S. 58. Glaeser-Stachel-Odehnal: p. 147 D. Hilbert, S. Cohn-Vossen:Geometry and the...

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...

The simplest of these shapes is the tetrahedron... Hilbert, David; Cohn-Vossen, Stephan (1999). Geometry and the Imagination. American Mathematical...

between two points cannot have length greater than δ. Rigidity. In 1927 Cohn-Vossen proved that two ovaloids – closed surfaces with positive Gaussian curvature...

Philosophy. London. doi:10.4324/9780415249126-S036-1. ISBN 9780415250696. Vossen, Bas Van Der (2017). "Libertarianism". Oxford Research Encyclopedia of Politics...

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...

(1): 195–200. doi:10.2140/pjm.1990.143.195. MR 1047406. Hilbert, David; Cohn-Vossen, Stephan (1952). Geometry and the Imagination (2nd ed.). Chelsea. pp...

ISBN 978-0-87548-164-7. translated from the 10th German edition Hilbert, David; Cohn-Vossen, Stephan (1999). Geometry and Imagination. American Mathematical Society...

Cherubino [it] P'ei-Yuan Chou Leon Chwistek Louis Crelier Stephan Cohn-Vossen Richard Courant Georges Darmois Boris Delaunay Bruno de Finetti Béla Kerékjártó...

topology Wim Cohen (1923–2000), queueing theory Paul Cohn (1924–2006), algebraist Stephan Cohn-Vossen (1902–1936), differential geometry: 399  Ronald Coifman...

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)...

notes, archived from the original on 29 August 2008. Hilbert, David; Cohn-Vossen, Stephan (1952), Geometry and the Imagination (2nd ed.), New York: Chelsea...

"26. The Libertarian Case for Open Borders". In Brennan, Jason; van der Vossen, Bas; Scmidtz, David (eds.). The Routledge Handbook of Libertarianism. New...

the Wayback Machine. Journal of Libertarian Studies. 20 (1): 7. Van der Vossen, Bas (January 28, 2019). "Libertarianism" Archived September 11, 2020, at...

ISSN 0191-2917. 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:...

Symmetric Spaces, Academic Press, ISBN 0-12-338460-5 Hilbert, David; Cohn-Vossen, Stephan (1952), Geometry and the Imagination (2nd ed.), New York: Chelsea...