A one sentence Proof of the Infinitude of Primes
Sam Northshield 用一句话就说明了质数的无穷性. 这个很精彩的证明是这样的: Proof. If the set of primes is finite, then \[0\lt \prod_p \sin\left(\frac \pi p\right)= \prod_p \sin\left(\frac{\pi\Big(1+2\prod\limits_{p’}p’\Big)}p\right)=0. \qquad \Box\] 有更短的数学证明吗?应该没有! 这个证明正确吗?好像不是一目了然啊! …
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