Person: Bolzano, Bernard Placidus Johann Nepomuk


Bernard Bolzano successfully freed calculus from the concept of the infinitesimal. He also gave examples of 1-1 correspondences between the elements of an infinite set and the elements of a proper subset.

Mathematical Profile (Excerpt):

Born 5 October 1781, Prague, Bohemia, Austrian Habsburg domain (now Czech Republic). Died 18 December 1848, Prague, Bohemia (now Czech Republic).

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Algebra, Analysis, Origin Czech Republic, Set Theory, Special Numbers And Numerals, Topology

Parts: 1
Theorems: 2 3

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Adapted from other CC BY-SA 4.0 Sources:

  1. O’Connor, John J; Robertson, Edmund F: MacTutor History of Mathematics Archive