He could not return to Oxford but this had the advantage that he was able to study with some of the top mathematicians at the Sorbonne and the Collège de France such as Arago .
Siya ay hindi bumalik sa Oxford ngunit ito ay ang kalamangan na siya ay able sa pag-aaral na may ilan sa mga tuktok mathematicians sa Sorbonne at ang College de France tulad ng Arago.