This is the only theorem on this page.
The proof is obvious.
- J.H. Conway, On Numbers And Games, A K Peters, 2000
Self-reference and apparent self-reference
- Does It Blink?
- Apparent paradox
- Set of all subsets
- An Impossible Page
- Russell's paradox
- An Impossible Machine
- A theorem with an obvious proof
- The Diagonal Argument
- A link to a very similar puzzle
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