Name Karel Petr Role Mathematician | Died 1950 | |
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Karel Petr ( [ˈkarɛl ˈpɛtr̩]; 14 June 1868, Zbyslav, Austria-Hungary – 14 February 1950, Prague, Chechoslovakia) was one of the most renowned Czech mathematicians of the first half of the 20th century.

Eduard Čech was a doctoral student of Petr in Charles University, Prague. Petr's doctoral students also included Bohumil Bydžovský and Václav Hlavatý.
References
Karel Petr Wikipedia(Text) CC BY-SA