Karel Petr
Encyclopedia
Karel Petr (ˈkarɛl ˈpɛtr̩; 1868–1950) was one of the most renowned Czech
mathematicians of the first half of the 20th century.
Czech people
Czechs, or Czech people are a western Slavic people of Central Europe, living predominantly in the Czech Republic. Small populations of Czechs also live in Slovakia, Austria, the United States, the United Kingdom, Chile, Argentina, Canada, Germany, Russia and other countries...
mathematicians of the first half of the 20th century.