Gong Siqiu

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Analysis quiz

Posted on 2018-04-28 | Edited on 2018-07-07 | In Mathematical analysis |
1. 设$v(n)$ 是$n$ 维球体$\lbrace x^2_1 +\cdots +x_n^2\leqslant 1\rbrace$ 的体积,求$v(n)$ 的最大值$$B_n(a)=\lbrace (x_1,\cdots ,x_n):x^2_1 +\cdots +x_n^2\leqslant ...
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Note on Tobias Holzmann's Tesla's One-Way-Valve tutorial

Posted on 2018-04-23 | Edited on 2018-06-29 | In CFD |
Two weeks ago, I found Tobias Holzmann’s Tesla’s One-Way-Valve. It is great but there is no explaination. So, I write this page to record some trouble ...
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n重积分

Posted on 2018-04-21 | Edited on 2018-07-07 | In Mathematical analysis |
$f(x)$在$[0,1]$连续证明:$$\lim_{n \to \infty}\int_{[0,1]^n}f(\frac{x_1+x_2+\cdots+x_n}{n})\mathop{}\mathrm{d}x_1\mathop{}\mathrm{d}x_2\cdots\mathop{}\mathr ...
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IYPT

Posted on 2018-04-18 | Edited on 2018-06-29 | In IYPT |
04-10选定特斯拉阀,下载CAD模型,寻找CAD软件,仿真软件。ADINA,失败。 04-11找到一个特斯拉阀仿真例程,安装相应软件(OpenFoam 5.0,salome),运行salome script失败,联系作者。 04-12第一次打印,太粗糙,漏水。找到一个特斯拉阀仿真例程,安装相应软件 ...
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Supplementary task 9

Posted on 2018-04-08 | Edited on 2018-07-07 | In Mathematical analysis |
设$a_1,a_2,\cdots ,a_n$是非零常数.$f(x_1,x_2,\cdots ,x_n)$在$\mathbb{R}^n$上可微.求证:存在$\mathbb{R}$上一元可微函数$F(s)$使得$f(x_1,x_2,\cdots ,x_n)=F(a_1x_1+a_2x_2+\cdots ...
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苏轼词十首

Posted on 2018-04-06 | Edited on 2018-06-29 | In collection |
临江仙$\cdot$夜归临皋夜饮东坡醒复醉, 归来仿佛三更。 家童鼻息已雷鸣。 敲门都不应, 倚杖听江声。 长恨此身非我有, 何时忘却营营。 夜阑风静縠纹平。 小舟从此逝, 江海寄余生。 心向恬淡,身不由己。谁能忘却营营?只能长恨此身非我有。 定风波莫听穿林打叶声,何妨 ...
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A tour to Nanjing

Posted on 2018-04-06 | Edited on 2018-06-29 | In tour |
Mooring on River Qinhua -Du Mutranslated by 曾培慈 (Betty Tseng)The river is cold and enshrouded in a fog,the river sand enshrouded in moonlight,I’ve co ...
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Align underline in LaTeX

Posted on 2018-03-31 | Edited on 2018-06-29 | In LaTex |
These days, I had trouble in aligning two fractions, one of which has an underlined numerator while the otherdoesn’t.Just like this.$$\frac{\partial \ ...
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Gong Siqiu

Gong Siqiu

The blog of Gong Siqiu. It is mainly used to record some interesting questions during my study in USTC and some experiences.

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