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LaTex

LaTeX Math Symbols Cheat Sheet - Kapeli

Mathematical Symbols

Symbols LaTex
x2x^2 x^2
y1y_1 y_1
\infty \infty
-\infty -\infty
a\vec a \vec a
aˉ\bar a \bar a
aˊ\acute a \acute a
aˇ\check a \check a
aˋ\grave a \grave a
\cdot\cdots\dots \cdot,\cdots,\dots
AB\overrightarrow{AB} \overrightarrow{AB}

Binary Operators

Symbols LaTex
a+bcda+b-c*d a+b-c*d
a÷ba\div b a\div b
a±ba\pm b a\pm b
ab\frac a b \frac a b
b\sqrt b \sqrt b
\le \le
\ge \ge
\ne \ne
\approx \approx
\in \in
\notin \notin
\owns \owns
±\pm \pm

Big Operators

Symbols LaTex
i=1nai\sum_{i=1}^{n}{a_i} \sum_{i=1}^{n}{a_i}
i=1nai\prod_{i=1}^n{a_i} \prod_{i=1}^n{a_i}
limaa+b\lim_{a\rightarrow\infty}{a+b} \lim_{a\rightarrow\infty}{a+b}

Greek Letters

数学表达式 LaTex
α\alpha \alpha
β\beta \beta
γ\gamma \gamma
δ\delta \delta
Δ\Delta \Delta
ϵ\epsilon \epsilon
ε\varepsilon \varepsilon
η\eta \eta
θ\theta \theta
Θ\Theta \Theta
κ\kappa \kappa
ι\iota \iota
ζ\zeta \zeta
λ\lambda \lambda
Λ\Lambda \Lambda
μ\mu \mu
ϕ\phi \phi
Φ\Phi \Phi
φ\varphi \varphi
π\pi \pi
Π\Pi \Pi
ρ\rho \rho
ξ\xi \xi
Ξ\Xi \Xi
ν\nu \nu
υ\upsilon \upsilon
χ\chi \chi
ψ\psi \psi
Ψ\Psi \Psi
ω\omega \omega
σ\sigma \sigma
Σ\Sigma \Sigma
Ω\Omega \Omega
Γ\Gamma \Gamma
ϖ\varpi \varpi
τ\tau \tau

Trigonometry

Symbols LaTex
sinα\sin\alpha \sin\alpha
cosβ\cos\beta \cos\beta
tanγ\tan\gamma \tan\gamma
cotθ\cot\theta $\cot\theta

Matrix/Determinant

  • 大括号{Bmatrix},中括号{bmatrix},行列式{vmatrix},小括号\left(\right)
  • 行省略号\cdots,列省略号\vdots,斜向省略号(左上至右下)\ddots

[123456789](1)\begin{bmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{bmatrix}\tag{1}

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$$
\begin{bmatrix}
1 & 2 & 3 \\
4 & 5 & 6 \\
7 & 8 & 9
\end{bmatrix}\tag{1}
$$

(123456789)(2)\left( \begin{matrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{matrix} \right) \tag{2}

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9
$$
\left(
\begin{matrix}
1 & 2 & 3 \\
4 & 5 & 6 \\
7 & 8 & 9
\end{matrix}
\right) \tag{2}
$$

{1256710αα+1α+4}(3)\left\{ \begin{matrix} 1 & 2 & \cdots & 5 \\ 6 & 7 & \cdots & 10 \\ \vdots & \vdots & \ddots & \vdots \\ \alpha & \alpha+1 & \cdots & \alpha+4 \end{matrix} \right\} \tag{3}

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$$
\left\{
\begin{matrix}
1 & 2 & \cdots & 5 \\
6 & 7 & \cdots & 10 \\
\vdots & \vdots & \ddots & \vdots \\
\alpha & \alpha+1 & \cdots & \alpha+4
\end{matrix}
\right\} \tag{3}
$$

Tabel

294753618\begin{array}{|c|c|c|} \hline 2&9&4\\ \hline 7&5&3\\ \hline 6&1&8\\ \hline \end{array}

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$$
\begin{array}{|c|c|c|}
\hline 2&9&4\\
\hline 7&5&3\\
\hline 6&1&8\\
\hline
\end{array}
$$

开头结尾:以\begin{array}\end{array}开头结尾,每行元素间均须要插入 & ,每行元素以 \\ 结尾。

定义式:例:{|c|c|c|},其中c l r 分别代表居中、左对齐及右对齐。

竖直分割线:在定义式中插入 |, (||表示两条竖直分割线)。

水平分割线:在下一行输入前插入 \hline,以下图真值表为例。

ABF000011101111\begin{array}{cc|c} A&B&F\\ \hline 0&0&0\\ 0&1&1\\ 1&0&1\\ 1&1&1\\ \end{array}

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$$
\begin{array}{cc|c}
A&B&F\\
\hline 0&0&0\\
0&1&1\\
1&0&1\\
1&1&1\\
\end{array}
$$

Alignment|多项式对齐

a=b+c=d+e+f\begin{aligned} a &= b + c \\ &= d + e + f \end{aligned}

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$$
\begin{aligned}
a &= b + c \\
&= d + e + f
\end{aligned}
$$

Equations set|方程组

{3x+5y+z7x2y+4z6x+3y+2z\begin{cases} 3x + 5y + z \\ 7x - 2y + 4z \\ -6x + 3y + 2z \end{cases}

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$$
\begin{cases}
3x + 5y + z \\
7x - 2y + 4z \\
-6x + 3y + 2z
\end{cases}
$$

f(n)={n/2,if n is even3n+1,if n is oddf(n) = \begin{cases} n/2, & \text{if }n\text{ is even} \\ 3n+1, & \text{if }n\text{ is odd} \end{cases}

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$$
f(n) =
\begin{cases}
n/2, & \text{if }n\text{ is even} \\
3n+1, & \text{if }n\text{ is odd}
\end{cases}
$$
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