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Christoph Bernhard Francke - Portrait of the philosopher Leibniz (ca. 1695) Christoph Bernhard Francke - Herzog Anton Ulrich Museum.

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  1. Project Gutenberg (gutenberg_org@mastodon.social)'s status on Tuesday, 29-Oct-2024 17:19:41 UTC Project Gutenberg Project Gutenberg

    #OTD in 1675.

    Leibniz makes the first use of the long s (∫) as a symbol of the integral in calculus. He adapted the integral symbol, ∫, from the letter ſ (long s), standing for summa (written as ſumma; Latin for "sum" or "total").

    https://www.gutenberg.org/ebooks/author/7168

    #books #mathematics

    In conversation about 24 days ago from mastodon.social permalink
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