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How big is infinity? - Dennis Wildfogel

2y ago
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View full lesson: http://ed.ted.com/lessons/how-big-is-infinity Using the fundamentals of set theory, explore the mind-bending concept of the "infinity of infinities" -- and how it led mathematicians to conclude that math itself contains unanswerable questions. Lesson by Dennis Wildfogel, animation by Augenblick Studios.