数学中国

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预览 Issues with keyboard backlight whang2011 2012-11-21 15:45 02929 whang2011 2012-11-21 15:45
预览 Parts Compatibility and Retrofitting whang2011 2012-11-21 15:35 02703 whang2011 2012-11-21 15:35
预览 2011、2012北大核心《人民论坛》 《人民论坛》杂志社编辑部最新征稿投稿 bashu 2012-7-28 10:16 13027 agdada 2012-11-15 16:48
预览 [讨论]猪肉还会继续涨价吗? lycsok1 2012-7-5 10:33 23185 agdada 2012-11-15 16:48
预览 [建议]十一味参芪片对医治排便有没有作用 chenggongshe 2012-11-11 15:16 02738 chenggongshe 2012-11-11 15:16
预览 [建议]十一味参芪片和替吉奥胶囊能否一同食用 chenggongshe 2012-11-11 15:11 02749 chenggongshe 2012-11-11 15:11
预览 [原创]黎曼猜想完整简明证明 llz2008 2012-11-7 18:43 02790 llz2008 2012-11-7 18:43
预览 in troubles for being new bought non compatible parts whang2011 2012-11-6 17:12 02753 whang2011 2012-11-6 17:12
预览 Help with my HP Laptop Keyboard? whang2011 2012-11-6 16:52 02681 whang2011 2012-11-6 16:52
预览 数学基础知识新规定 xiaoluo 2012-5-27 18:10 63431 gdsafdsa 2012-11-6 14:53
预览 已知:整数a>0和n>5时,求证:n^2≠a^2+(a+1)^2 昌建 2012-5-29 08:34 13330 gdsafdsa 2012-11-6 14:52
预览 [分享] 爱瑞克电动车祝贺伟大数学家陆高麒 陆高麟先生实现数学强国的伟大复兴!4T 辉煌e中国 2012-5-29 16:07 33541 gdsafdsa 2012-11-6 14:51
预览 [原创]素数个数公式 llz2008 2012-11-5 18:08 02756 llz2008 2012-11-5 18:08
预览 警察做梦时想象的月亮与实际上左右相反(有图有真相): webmaster 2012-9-13 04:24 43852 fdafdasf 2012-11-5 16:33
预览 MacBook Pro Keyboard & Mouse stopped working whang2011 2012-10-13 16:21 13137 gdasfdafda 2012-11-1 16:37
预览 [注意][原创]文明上网,从源头做起!  ...23456..93 changbaoyu 2010-12-20 21:41 927168097 太阳 2012-10-28 19:15
预览 [垃圾]尚九天先生从小受到良好的家庭教育  ...23456 wangyangkee 2011-3-26 07:54 5716124 wangyangkee 2012-10-28 14:59
预览 KEYBOARD issue for G42 Laptop. whang2011 2012-9-19 09:46 13095 dgsafda 2012-10-27 12:20
预览 [原创]请教一个指数方程 ladinding 2012-9-18 19:44 23440 dgsafda 2012-10-27 12:19
预览 哥德巴赫猜想不成立之理由  ...2 cyg571223 2012-3-4 15:29 138691 dgsafda 2012-10-27 12:18
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\frac{\square}{\square}\sqrt{\square}\square_{\baguet}^{\baguet}\overarc{\square}\ \dot{\baguet}\left(\square\right)\binom{\square}{\square}\begin{cases}\square\\\square\end{cases}\ \begin{bmatrix}\square&\square\\\square&\square\end{bmatrix}\to\Rightarrow\mapsto\alpha\ \theta\ \pi\times\div\pm\because\angle\ \infty
\frac{\square}{\square}\sqrt{\square}\sqrt[\baguet]{\square}\square_{\baguet}\square^{\baguet}\square_{\baguet}^{\baguet}\sum_{\baguet}^{\baguet}\prod_{\baguet}^{\baguet}\coprod_{\baguet}^{\baguet}\int_{\baguet}^{\baguet}\lim_{\baguet}\lim_{\baguet}^{\baguet}\bigcup_{\baguet}^{\baguet}\bigcap_{\baguet}^{\baguet}\bigwedge_{\baguet}^{\baguet}\bigvee_{\baguet}^{\baguet}
\underline{\square}\overline{\square}\overrightarrow{\square}\overleftarrow{\square}\overleftrightarrow{\square}\underrightarrow{\square}\underleftarrow{\square}\underleftrightarrow{\square}\dot{\baguet}\hat{\baguet}\vec{\baguet}\tilde{\baguet}
\left(\square\right)\left[\square\right]\left\{\square\right\}\left|\square\right|\left\langle\square\right\rangle\left\lVert\square\right\rVert\left\lfloor\square\right\rfloor\left\lceil\square\right\rceil\binom{\square}{\square}\boxed{\square}
\begin{cases}\square\\\square\end{cases}\begin{matrix}\square&\square\\\square&\square\end{matrix}\begin{pmatrix}\square&\square\\\square&\square\end{pmatrix}\begin{bmatrix}\square&\square\\\square&\square\end{bmatrix}\begin{Bmatrix}\square&\square\\\square&\square\end{Bmatrix}\begin{vmatrix}\square&\square\\\square&\square\end{vmatrix}\begin{Vmatrix}\square&\square\\\square&\square\end{Vmatrix}\begin{array}{l|l}\square&\square\\\hline\square&\square\end{array}
\to\gets\leftrightarrow\nearrow\searrow\downarrow\uparrow\updownarrow\swarrow\nwarrow\Leftarrow\Rightarrow\Leftrightarrow\rightharpoonup\rightharpoondown\impliedby\implies\Longleftrightarrow\leftharpoonup\leftharpoondown\longleftarrow\longrightarrow\longleftrightarrow\Uparrow\Downarrow\Updownarrow\hookleftarrow\hookrightarrow\mapsto
\alpha\beta\gamma\Gamma\delta\Delta\epsilon\varepsilon\zeta\eta\theta\Theta\iota\kappa\varkappa\lambda\Lambda\mu\nu\xi\Xi\pi\Pi\varpi\rho\varrho\sigma\Sigma\tau\upsilon\Upsilon\phi\Phi\varphi\chi\psi\Psi\omega\Omega\digamma\vartheta\varsigma\mathbb{C}\mathbb{H}\mathbb{N}\mathbb{P}\mathbb{Q}\mathbb{R}\mathbb{Z}\Re\Im\aleph\partial\nabla
\times\cdot\ast\div\pm\mp\circ\backslash\oplus\ominus\otimes\odot\bullet\varnothing\neq\equiv\not\equiv\sim\approx\simeq\cong\geq\leq\ll\gg\succ\prec\in\ni\cup\cap\subset\supset\not\subset\not\supset\notin\not\ni\subseteq\supseteq\nsubseteq\nsupseteq\sqsubset\sqsupset\sqsubseteq\sqsupseteq\sqcap\sqcup\wedge\vee\neg\forall\exists\nexists\uplus\bigsqcup\bigodot\bigotimes\bigoplus\biguplus\bigcap\bigcup\bigvee\bigwedge
\because\therefore\angle\parallel\perp\top\nparallel\measuredangle\sphericalangle\diamond\diamondsuit\doteq\propto\infty\bowtie\square\smile\frown\bigtriangledown\triangle\triangleleft\triangleright\bigcirc \wr\amalg\models\preceq\mid\nmid\vdash\dashv\nless\ngtr\ldots\cdots\vdots\ddots\surd\ell\flat\sharp\natural\wp\clubsuit\heartsuit\spadesuit\oint\lfloor\rfloor\lceil\rceil\lbrace\rbrace\lbrack\rbrack\vert\hbar\aleph\dagger\ddagger

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