the most outlandish technique is used to solve this...
14:15
Functional Equation
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We Asked People in Milan How Much They Earn | Easy Italian 225
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is this trickier than it seems?
15:42
a super nice problem
17:56
Euler's Proof of the Infinitude of Primes
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Way Bigger Than Graham's Number (Goodstein Sequence) - Numberphile
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What is the i really doing in Schrödinger's equation?
32:15