The most important theorem in (differential) geometry | Euler characteristic #3

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This channel is meant to showcase interesting but underrated maths (and physics) topics and approaches, either with completely novel topics, or a well-known topic with a novel approach. If the novel approach resonates better with you, great! But the videos have never meant to be pedagogical - in fact, please please PLEASE do NOT use YouTube videos to learn a subject. While stylistically similar to 3Blue1Brown, I don't use Manim (Grant's mathematical animation Python library) to make my videos. I actually use PowerPoint, GeoGebra and (sometimes) Mathematica to produce my videos. Pull down the description of my most recent video to see how you can download the files.