El teorema de Artin. Extensiones de Galois.
https://salavirtual-udelar.zoom.us/rec/share/mAiU6gCrjxGQUbPllc36Ii8wE14mak6IGccj6LTfbz71EPm1mW3EOz6ch11wD_T7.bJVUOpdAN91ldymQ?startTime=1623776843000
