Top network posts

• 146 Do most mathematicians know most topics in mathematics?
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• 5 Proper subgroup of normalizer of a finite group impies nilpotent.
• 5 How to show that $\sin^2(1/n)\leq 1/n^2, \forall n\in\mathbb{N}?$
• 5 A set is recursively enumerable iff it is the range of a total recursive function
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