bertrand russell

bertrand russell

1 + 1 = 2 (QI: F series, Episode 1)

1d ago
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In order to re-invent mathematics with set theory, it is necessary to prove that 1 + 1 = 2. By the way, Bertrand Russell didn't write 'Principia Mathematica' by himself; he co-wrote it with A.N. Whitehead.