the number system where 1+2+4+8+⋯ really is −1
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Why it's on BrighterTube
Hand-picked by a BrighterTube curator · found via Reddit r/learnmath thread: Some criminally underwatched math channels on youtube · 86% confidenceBuilds p-adic absolute values and convergence properly instead of treating the sum as a trick.
What you'll learn
Introduces the 2-adic numbers, where 1+2+4+8+... converges to -1, and why that is consistent.
Video by Michael Penn, played through YouTube's embedded player.