Chapter 2: An ancient theorem and a modern question: Difference between revisions

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===Videos===
===Videos===
[https://www.youtube.com/watch?v=u6Got0X41pY Playing Sports in Hyperbolic Space]


[https://www.youtube.com/watch?v=PnW5IRvgvLY Ditching the Fifth Axiom]
[https://www.youtube.com/watch?v=PnW5IRvgvLY Ditching the Fifth Axiom]
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