Can Higgs explain Leption Universality Violation in B->Kll ? 2021-03-25

A few days ago, the LHCb collaboration reported an evidence for Lepton Universality Violation (LUV) in the beauty-quark decays B -> K l + l - ...

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A problem about the AM-GM inequality (一道关于均值不等式的题目) 2021-02-01

Recently, Kai-Liang brought to my attention an extension form of the classic inequality of the arithmetic and geometric means. It ...

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My experience of using Fourier transformation (我使用傅利叶变换的经历) 2021-01-19

I was shocked the first time when I knew Fourier transformtion. It is amazing that nearly any function could be expanded as a sum of simple sine ...

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First observation of Mercury 第一次看到水星 2020-11-13

11th Nov. is said to be the last and best day in 2020 to observe Mercury. Because the angular distance between Sun and Mercury is the greatest ...

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素数基本定理证明中有趣的3－4－1引理 2020-10-16

素数基本定理 是描述素数分布的一个非常重要的定理。它表明素数的密度大约是1/log(x)，即 不大于x内的素数个数大约为x/log(x) 。 Jacques Solomon ...

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A representations of Euler\'s constant （欧拉常数） 2020-09-10

欧拉常数通常用 表示，其值约为0.5772。它有N多表示方式，可以看一下它的 百度百科 。我最近在看analytic number theory，知道其中的三种。有一种积 ...

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A primary-school (Fibonacci-type) problem 2020-09-04

 I knew this problem in a WeChat group chat. It is said to be a problem for primary-school students. Here is the problem. How many ...

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金星，御夫座，双子座，猎户座，白羊座和金牛座 2020-08-15

昨天晚上设了闹钟，凌晨02:30，因为这个时候金星才从东方升起。 凌晨2点半，闹钟准时响起，脑袋还有点不清醒。拿起眼镜和手机，迅速跑上天台。唿，凉爽 ...

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