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Bernard Bolzano
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Bernardus Placidus Johann Nepomuk Gonzal Bolzano

(1781-10-05)5 October 1781
Prague, Kingdom of Bohemia
Died 18 December 1848(1848-12-18) (aged 67)
Prague, Kingdom of Bohemia
Education University of Prague
(PhD, 1804)
Era 19th-century philosophy
Region Western philosophy
School Logical objectivism
Classical liberalism
Institutions University of Prague
Thesis Betrachtungen über einige Gegenstände der Elementargeometrie (Considerations on Some Objects of Elementary Geometry) (1804)
Academic advisors Franz Josef Gerstner
Notable students Robert von Zimmermann
Main interests
Logic, epistemology, theology
Notable ideas
Logical objectivism
Bolzano's theorem (the first purely analytic proof of the intermediate value theorem)
Bolzano–Weierstrass theorem
(ε, δ)-definition of limit
Least-upper-bound property
Bernard Bolzano
Church Catholic Church
Ordained 1805

Bernard Bolzano ( born Bernardus Placidus Johann Nepomuk Bolzano; 5 October 1781 – 18 December 1848) was a Bohemian mathematician, logician, philosopher, theologian and Catholic priest of Italian extraction, also known for his liberal views.

Bolzano wrote in German, his native language. For the most part, his work came to prominence posthumously.

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