加粗斜体:\boldsymbol 正比于:\propto 无穷:\infty 任意:\forall 存在:\exists
symbol + to denote the sum between two numbers or, more in general, between two algebraic quantities (likex+y). However, when we want todenote the sum of several elements that are indexed, we use a capital sigma letter∑∑and a couple of limits that denote where the sum starts and ...
\end{cases} $$ $\nabla$ 手写体$\mathcal{A}$ 粗体 $ \textbf{A}$下划线 $\underline{A} $ 空心$\mathbb{E}$ 空集$\varnothing$ 加粗斜体$\boldsymbol{A}$ 上划线 $\bar{A}$ $\hat{A} \check{A} \tilde{A} \acute{A} \grave{A} \dot{A} \ddot{A} \breve{A} \bar{A} \vec{A...
\end{numcases} 6)\frac{分子}{分母} 7)求和 \sum 与积分 \int 8)上标 ^{角标} 与下标 _{角标} 9)根式 开平方:\sqrt{表达式} 开n次方:\sqrt[n]{表达式}
symbolcommandsymbolcommandsymbolcommand ∑∑ \sum ∑ba∑ab \sum_{a}^ ∑bac∑abc \begin{matrix} \sum_{a}^{b} {c} \end ∏∏ \prod ∏ba∏ab \prod_{a}^ ∏bac∏abc \begin{matrix} \prod_{a}^{b} {c} \end ∐∐ \coprod ∐ba∐ab \coprod_{a}^ ∐bac∐abc \begin{...
. Don't forget{…}if the limits are more than a single symbol. For example,\sum_{i=0}^\infty i^2is . Similarly, . FractionsThere are three ways to make these.\frac abapplies to the next two groups, and produces ; for more complicated numerators and denominators use{…}:\frac{a...
\boldsymbol {v} 模\left \| x \right \| \left \| x \right \| 矩阵 有括号的矩阵 \begin{bmatrix} 1&2&3\\ 4&5&6 \end{bmatrix} \begin{bmatrix} 1&2&3\\ 4&5&6 \end{bmatrix} 无括号的矩阵 \begin{matrix} 1&2&3\\ 4&5&6 \end{matrix} \begin{bmatrix} 1&2&3\\...
备注 花括号{}内只能使用拉丁字母和数字,不能使用希腊字母如\alpha等。斜粗体 \boldsymbol{012…abc…ABC…\alpha \beta\gamma…} 效果 备注 使用 \boldsymbol{}可以加粗所有合法的符号。 斜体数字 \mathit{0123456789} ...
公式中插入文本，可以有\text{}和\mbox{}两种方式，区别在于文本样式调整可能存在差异。y = x2„二...
\setbeamertemplate{navigation symbols}%{\insert***navigationsymbol} 其中***可以为 slide,frame,subsection,section,doc,backfindforward 多个导航图标,用逗号分隔 取消 \setbeamertemplate{navigation symbols}{} +---+ |beamer中动态时间和倒计时的最终解决办法| +---+ 摘自bbs.ctex.org pdflatex通过...