Top network posts

• 28 How can I prove that one of $n$, $n+2$, and $n+4$ must be divisible by three, for any $n\in\mathbb{N}$
• 15 Is there any conjecture that has been proved to be solvable/provable but whose direct solution/proof is not yet known?
• 12 Is The *Mona Lisa* in the complement of the Mandelbrot set.
• 8 Complete lattices and sublattices – which requirement is more stringent?
• 8 Why is 'abuse of notation' tolerated?
• 8 Show: $\mathbb{C}=\overline{\mathbb{C}\setminus\left\{0\right\}}$
• 7 How to understand why $x^0 = 1$, where $x$ is any real number?
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