nLab Bernard Bolzano


Bernard Bolzano (1789-1848) was a Bohemian mathematician, logician, and philosopher.

In his lifetime he was renowned perhaps mainly for his Wissenschaftslehre which puts forth an encompassing theory of science. In mathematics, much of his work became well known only after his death, but he can be regarded as an early proponent of epsilontic analysis and the introduction of rigor in analysis, as for example in the result known as the Bolzano-Weierstrass theorem? (q.v.).


Collected works are available at

For biographical and other detail, see

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