What is a number?
1:22:01
The Rise of Rigor in the Calculus
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What is Proof?
58:16
Limits of Logic: The Gödel Legacy
13:49
Roger Penrose - Is Mathematics Invented or Discovered?
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Climb to Infinity!
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The Gödel incompleteness phenomenon
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The Langlands Program - Numberphile
43:09