Claude Gaspard Bachet de Méziriac

Events

1

Episodes

1

Years

1770

Every event in Historedia whose sources name Claude Gaspard Bachet de Méziriac, 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. Lagrange's proof of Bachet's Conjecture

   1770

   Role: Original stater of the conjecture

   1. 11770 · BerlinProof of Bachet's Conjecture

      Lagrange demonstrated in 1770 that every nonnegative integer is a sum of four non-negative integer squares, resolving the long-standing conjecture.

Sources

1. Lagrange's four-square theorem Wikipedia, revision of 2026-05-24