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- 30 Fermat's Last Theorem and Faltings' Theorem.
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- 14 Complement-like operator and the axiom of choice
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- 10 100 using only 5 number of digits
- 9 Let $f\in L^1(\mathbb R)$ and let $F,G:\mathbb R\to\mathbb R$ be the functions defined by: ...
- 9 Proof that the number of proofs is countably infinite
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