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Devac  ·  3081 days ago  ·  link  ·    ·  parent  ·  post: Hubski, shoot me with random facts that you think will blow my mind

Oh, I have an another one! Sum of all natural numbers as in:

1 + 2 + 3 + … = - 1/12

Yes! Minus one twelfth! Here are two videos crucial for getting it:

Explanation of why 1 - 1 + 1 - 1 + … = 1/2 (important partial result):

Explanation of the equation for all naturals: