## Section: New Results

### Abel's theorem

Participants : Sophie Bernard, Yves Bertot, Cyril Cohen, Laurence Rideau, Assia Mahboubi [Inria Gallinette] , Russell O'Connor [McMaster University] .

A natural extension of the work on group theory is a proof that polynomials of degree higher than 5 cannot be solved by radicals. This is known as Abel's theorem. We have started an experiment to give a formal proof of this result on top of the Mathematical Components library.