1.希腊字母
| 数学表达式 | Markdown语法 |
|---|---|
| α | \alpha |
| β | \beta |
| γ | \gamma |
| δ | \delta |
| ε | \epsilon |
| ζ | \zeta |
| η | \eta |
| θ | \theta |
| ι | \iota |
| κ | \kappa |
| λ | \lambda |
| μ | \mu |
| ν | \nu |
| ξ | \xi |
| ο | \omicron |
| π | \pi |
| ρ | \rho |
| σ | \sigma |
| τ | \tau |
| υ | \upsilon |
| φ | \phi |
| χ | \chi |
| ψ | \psi |
| ω | \omega |
2.基本表达式
| 数学表达式 | Markdow语法 |
|---|---|
| x² | x^2 |
| y₁ | y_1 |
| ∞ | \infty |
| -∞ | -\infty |
| a + b - c * d | a+b-c*d |
| a ÷ b | a\div{b} |
| a ± b | a\pm{b} |
| a/b | \frac{a}{b} |
| √b | \sqrt{b} |
| sinθ | \sin{\theta} |
| cosθ | \cos{\theta} |
| tanθ | \tan{\theta} |
| cotθ | \cot{\theta} |
| ≦ | \leq |
| ≧ | \geq |
3.复杂表达式
（1）
\vec{F}
F
⃗
\vec{F}
F
(2)
\sum_{i=1}^{n}{a_i}
∑
i
=
1
n
a
i
\sum_{i=1}^{n}{a_i}
i=1∑nai
(3)
\lim_{a\rightarrow+\infty}{a+b}
lim
a
→
+
∞
a
+
b
\lim_{a\rightarrow+\infty}{a+b}
a→+∞lima+b
(4)
\begin{matrix}
1 & 2 & 3 \\
4 & 5 & 6 \\
7 & 8 & 9
\end{matrix}
1 2 3 4 5 6 7 8 9 \begin{matrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{matrix} \ 147258369
(5)
\left\{
\begin{matrix}
1 & 2 & 3 \\
4 & 5 & 6 \\
7 & 8 & 9
\end{matrix}
\right\}
{ 1 2 3 4 5 6 7 8 9 } \left\{ \begin{matrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{matrix} \right\} ⎩ ⎨ ⎧147258369⎭ ⎬ ⎫
(6)
\left[
\begin{matrix}
1 & 2 & 3 \\
4 & 5 & 6 \\
7 & 8 & 9
\end{matrix}
\right]
[ 1 2 3 4 5 6 7 8 9 ] \left[ \begin{matrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{matrix} \right] 147258369
(7)
\left(
\begin{matrix}
1 & 2 & 3 \\
4 & 5 & 6 \\
7 & 8 & 9
\end{matrix}
\right)
( 1 2 3 4 5 6 7 8 9 ) \left( \begin{matrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{matrix} \right) 147258369
(8)
\left\{
\begin{matrix}
1 & 2 & \cdots & 5 \\
6 & 7 & \cdots & 10 \\
\vdots & \vdots & \ddots & \vdots \\
\alpha & \alpha+1 & \cdots & \alpha+4
\end{matrix}
\right\}
{ 1 2 ⋯ 5 6 7 ⋯ 10 ⋮ ⋮ ⋱ ⋮ α α + 1 ⋯ α + 4 } \left\{ \begin{matrix} 1 & 2 & \cdots & 5 \\ 6 & 7 & \cdots & 10 \\ \vdots & \vdots & \ddots & \vdots \\ \alpha & \alpha+1 & \cdots & \alpha+4 \end{matrix} \right\} ⎩ ⎨ ⎧16⋮α27⋮α+1⋯⋯⋱⋯510⋮α+4⎭ ⎬ ⎫
(9)
\begin{vmatrix}
1 & 2 & 3 \\
4 & 5 & 6 \\
7 & 8 & 9
\end{vmatrix}
∣ 1 2 3 4 5 6 7 8 9 ∣ \begin{vmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{vmatrix} 147258369
(10)
\begin{cases}
3x + 5y + z \\
7x - 2y + 4z \\
-6x + 3y + 2z
\end{cases}
{ 3 x + 5 y + z 7 x − 2 y + 4 z − 6 x + 3 y + 2 z \begin{cases} 3x + 5y + z \\ 7x - 2y + 4z \\ -6x + 3y + 2z \end{cases} ⎩ ⎨ ⎧3x+5y+z7x−2y+4z−6x+3y+2z
(11)
f(n) =
\begin{cases}
n/2, & \text{if }n\text{ is even} \\
3n+1, & \text{if }n\text{ is odd}
\end{cases}
f ( n ) = { n / 2 , if n is even 3 n + 1 , if n is odd f(n) = \begin{cases} n/2, & \text{if }n\text{ is even} \\ 3n+1, & \text{if }n\text{ is odd} \end{cases} f(n)={n/2,3n+1,if n is evenif n is odd
4.复杂符号
（1）
\digamma
ϝ
\digamma
ϝ
(2)
\Delta
Δ
\Delta
Δ
(3)
\Gamma
Γ
\Gamma
Γ
(4)
\beth
ℶ
\beth
ℶ
(5)
\daleth
ℸ
\daleth
ℸ
(6)
\Xi
Ξ
\Xi
Ξ
(7)
\sqrt[n]{abc}
a
b
c
n
\sqrt[n]{abc}
nabc
(8)
\overline{abc}
a
b
c
‾
\overline{abc}
abc
(9)
\overleftarrow{abc}
a
b
c
←
\overleftarrow{abc}
abc
(10)
\overbrace{abc}
a
b
c
⏞
\overbrace{abc}
abc
(11)
\underbrace
a
b
c
⏞
\overbrace{abc}
abc
(12)
\vert
∣
\vert
∣
(13)
\ |
∥
\|
∥
(14)
\langle
⟨
\langle
⟨
(15)
\rangle
⟨
\langle
⟨
(16)
\lfloor
⌊
\lfloor
⌊
(17)
\rfloor
⌋
\rfloor
⌋
(18)
\lceil
⌈
\lceil
⌈
(19)
\rceil
⌉
\rceil
⌉
(20)
\Uparrow
⇑
\Uparrow
⇑
(21)
\uparrow
↑
\uparrow
↑
(22)
\Downarrow
⇓
\Downarrow
⇓
(23)
\downarrow
↓
\downarrow
↓
(24)
\llcorner
⌞
\llcorner
└
(25)
\lrcorner
⌟
\lrcorner
┘
(26)
\ulcorner
⌜
\ulcorner
┌
(27)
\urcorner
⌝
\urcorner
┐
(28)
\sum
∑
\sum
∑
(29)
\prod
∏
\prod
∏
(30)
\coprod
∐
\coprod
∐
(31)
\int
∫
\int
∫
(32)
\oint
∮
\oint
∮
(33)
\iint
∬
\iint
∬
(34)
\biguplus
⨄
\biguplus
⨄
(35)
\bigcap
⋂
\bigcap
⋂
(36)
\bigcup
⋃
\bigcup
⋃
(37)
\bigoplus
⨁
\bigoplus
⨁
(38)
\bigotimes
⨂
\bigotimes
⨂
(39)
\bigodot
⨀
\bigodot
⨀
(40)
\bigvee
⋁
\bigvee
⋁
(41)
\bigwedge
⋀
\bigwedge
⋀
(42)
\bigsqcup
⨆
\bigsqcup
⨆
5.不常用符号
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