In geometry, the Petr–Douglas–Neumann theorem (or the PDN-theorem) is a result concerning arbitrary planar polygons. The theorem asserts that a certain...
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101–116. doi:10.1090/s0002-9947-1940-0002242-2. MR 0002242. Petr–Douglas–Neumann theorem Peter Lax, Mathematician: An Illustrated Memoir, by Reuben Hersh...
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Aubel's theorem and a square version of the Napoleon's theorem. All three of these theorems are just a special case of Petr–Douglas–Neumann theorem. Given...
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The Mathematical Gazette. Petr–Douglas–Neumann theorem Thébault's theorem Napoleon's theorem Napoleon points Bottema's theorem Van Aubel, H. (1878), "Note...
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In geometry, Napoleon's theorem states that if equilateral triangles are constructed on the sides of any triangle, either all outward or all inward, the...
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Bernhard Hermann Neumann AC, FRS (15 October 1909 – 21 October 2002) was a German-born British-Australian mathematician, who was a leader in the study...
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Bohemia in Austria-Hungary and later Czechoslovakia. Petr is known for the Petr–Douglas–Neumann theorem in plane geometry, which he proved in 1905 (in Czech)...
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Klitzing Von Neumann ordinal, von Neumann architecture – John von Neumann Von Restorff effect – Hedwig von Restorff Von Zeipel theorem – Edvard Hugo...
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complete graphs (Zhibo Chen, 1996) Hanna Neumann conjecture (Joel Friedman, 2011, Igor Mineyev, 2011) Density theorem (Hossein Namazi, Juan Souto, 2010) Full...
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program verification, Modula-3 committee, Simplify theorem prover in ESC/Java Klára Dán von Neumann (1911–1963) – principal programmer for the MANIAC I...
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Bernhard Neumann (1909–2003), group theory John von Neumann (1903–1957), set theory, physics and computer science; Bôcher Prize (1938) Hanna Neumann (1914–1971)...
179 KB (15,739 words) - 04:01, 5 July 2025
Steffen; Fujimori, Shinichiro; Grooten, Monique; Harwood, Thomas; Havlík, Petr; Herrero, Mario; Hoskins, Andrew J.; Jung, Martin; Kram, Tom; Lotze-Campen...
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minerals from granitic pegmatites, particularly through the influence of Petr Černý, and he worked on a wide variety of pegmatite minerals with Černý and...
58 KB (6,146 words) - 23:48, 22 May 2025
Steffen; Fujimori, Shinichiro; Grooten, Monique; Harwood, Thomas; Havlík, Petr; Herrero, Mario; Hoskins, Andrew J.; Jung, Martin; Kram, Tom; Lotze-Campen...
207 KB (19,749 words) - 17:19, 31 May 2025