Karel Petr
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Karel Petr (Script error: No such module "IPA".; 14 June 1868, Zbyslav, Austria-Hungary – 14 February 1950, Prague, Czechoslovakia)Template:R was a mathematician from Bohemia in Austria-Hungary and later Czechoslovakia.
Biography
Petr is known for the Petr–Douglas–Neumann theorem in plane geometry, which he proved in 1905 (in Czech)Template:R and in 1908 (in German).Template:R It was independently rediscovered by Jesse Douglas in 1940Template:R and by B H Neumann in 1941.Template:R
Eduard Čech was a doctoral student of Petr at Charles University in Prague. Petr's doctoral students also included Bohumil Bydžovský and Václav Hlavatý.Template:R
References
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External links
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