then he worked at the Department of Philosophy and Department of Interdisciplinary Activities, University of West Bohemia in Pilsen. Bibliography See also Semiset Vopěnka's principle Notes References Further reading External links Short biography in English Documentary about Vopěnka (in Czech with English subtitles, freely downloadable) 1935 births 2015 deaths Education ministers of the Czech Republic Czech mathematicians Czech philosophers Set theorists Historians of mathematics Recipients of Medal of Merit (Czech Republic) Mathematicians from Prague Academic staff of the University of West Bohemia Christian Democratic Party (Czech Republic) politicians