Teoría de Números 32.- Fermat n=4 y el Método del Descenso Infinito

Picked one by one from a mixed channel; title passed two strict editor passes and the clickbait rules.

A 11-minute video from Math Rocks: “Number Theory 32.- Fermat n=4 and the Method of Infinite Descent”.

Video by Math Rocks, played through YouTube's embedded player.