Alexis used Euclid 's Elements while learning to read and by the age of nine he had mastered the excellent mathematics textbook of Guisnée Application de l'algèbre à la géométrie which provided a good introduction to the differential and integral calculus as well as analytical geometry.
Alexis ginamit Euclid 's Sangkap habang ang pag-aaral na basahin at sa pamamagitan ng edad ng siyam na niya mastered ang mahusay na aklat-aralin sa matematika ng Guisnée Application de l'algèbre ŕ la géométrie na ibinigay ng isang magandang pagpapakilala sa mga kaugalian at integral calculus, pati na rin ang analytical geometry.