You can turn subtitles on if you wish to! :) Timestamps: 00:00 - Section 0: A random surprise 02:21 - Section 1: An "innocent" graph 05:27 - Section 2: Something fishy 08:57 - Section 3: Everything comes together 14:58 - Reflection and goodbye MUSIC used OMORI title theme: Something that I went "woah" when I first encountered the theorem statement. Countable infinity has managed to surprise me (or hopefully also you) again. I learned this from the Graduate Graph Theory textbook of Reinhard Diestel ( ) sections 8.3 and 11.3 to be exact. Thank you so much for 3b1b for hosting SoME1 ( This really boosted my motivation to create a math-related video. Hopefully, I will continue making more videos of similar style even after the contest is over. Hope you enjoy! :) #SoME1 #graphtheory