In the following year he was appointed to the École Polytechnique, the institution which had tried to prevent him continuing his studies some four years earlier; he was appointed répétiteur and admissions examiner.
Sa mga sumusunod na taon na siya ay hihirangin upang angkinin ang École Polytechnique, ang institusyon na may tried sa kanya upang maiwasan ang magpatuloy sa kanyang pag-aaral ng ilang apat na taon na mas maaga; siya ay hihirangin répétiteur at admission tagasuri.