Portrait of Florian Cajori

Florian Cajori

American mathematician

Lived
1859–1930

Updated September 2026

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About Florian Cajori

Florian Cajori was a Swiss-American historian of mathematics, especially known for his comprehensive treatise about mathematical notation, A History of Mathematical Notations.

Biography from Wikipedia, CC BY-SA 4.0. Photo via Wikimedia Commons.

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Sources: book lists and dates from Wikidata and Open Library, ratings from Open Library readers, free texts from Project Gutenberg. Last updated September 2026.