Berhard Bolzano
Berhard Bolzano
Mathematician and philosopher, born Prague, Bohemia, 1781 ; died there, 1848 . Ordained, 1805 , he was appointed to the chair of the philosophy of religion in Prague University. Owing to the rationalizing tendencies of his lectures, he was dismissed, 1820 , and retired into private life, engaging in mathematical studies. His theory of parallel lines (1804 ) anticipated Legendre. He developed the theory of functions of one real variable, and made notable additions to the theory of differentiation, the binominal theorem, and the concept of infinity.