Historedia
Person

Johannes Widmann

Events
1
Episodes
1
Years
1489

Every event in Historedia whose sources name Johannes Widmann, with the role they cite and all of that event’s episodes. This is not a biography, and mentions are grouped by name, so two people with the same name can share this page.

Events and episodes

  1. Publication of Widmann's mercantile arithmetic in Leipzig

    1489

    Role: Author and mathematician

    1. 1489 · LeipzigPublication of Mercantile Arithmetic

      Widmann published his arithmetic text in Leipzig in 1489, introducing plus and minus signs for business calculations.

Sources

  1. Johannes Widmann Wikipedia, revision of 2026-08-29