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2 unusual facts about Feit–Thompson theorem


Feit–Thompson theorem

A fully formal proof, checked with the Coq proof assistant, was announced in September 2012 by Georges Gonthier and fellow researchers at Microsoft Research and INRIA.

Minimal counterexample

The Feit–Thompson theorem, that infinite simple groups that are not cyclic groups have even order, was based on the hypothesis of some, and therefore some minimal, simple group G of odd order.


Joaquín de Roncali, 1st Marquis of Roncali

Roncali was the eldest son of Agustín de Roncali y Martínez de Murcia, Knight of Santiago, and his wife María del Carmen Ceruti y Feit.


see also