3 ms·

Which is proven in a similar way as OP's proof.

• ColinWright 4y ago
  ... but genuinely requires a lot more work to do carefully and properly. People underestimate how much work it is to create a non-handwavey proof of the FTA. Tim Gowers has written about this (although I don't have the reference to hand, and I'm on a train with a dodgy connection).