Hello World

Welcome to Hexo! This is your very first post. Check documentation for more info. If you get any problems when using Hexo, you can find the answer in troubleshooting or you can ask me on GitHub. Qu...

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On computation

Numeric On computation evalutate \(\pi\) \[\frac{\pi}{4}=\sum_{k=0}^{\infty}\left(\frac{1}{4k+1}-\frac{1}{4k+3}\right)\] \[\frac{\pi}{2} = \sum_{n=0}^{\infty} \frac{(2n)!!}{(2n+1)!!} \left(\frac{...

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this IS the title

this is the abstract

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