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• 38 What is the mathematical notation for rounding a given number to the nearest integer?
• 33 Elementary proof of Zsigmondy's theorem
• 31 Trigonometric diophantine equation $8\sin^2\left(\frac{(k+1)\pi}{n}\right)=n\sin\left(\frac{2\pi}{n}\right)$
• 30 Elementary proof of Zsigmondy's theorem
• 23 Proving that $\gcd(2^m - 1, 2^n - 1) = 2^{\gcd(m,n )} - 1$
• 23 Why shouldn't this prove the prime number theorem?
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