1. 希臘字母
序號 |
符號 |
代碼 |
1 |
α |
\alpha |
2 |
β |
\beta |
3 |
γ |
\gamma |
4 |
ρ |
\rho |
5 |
σ |
\sigma |
6 |
δ |
\delta |
7 |
ϵ |
\epsilon |
8 |
ζ |
\zeta |
9 |
η |
\eta |
10 |
θ |
\theta |
11 |
λ |
\lambda |
12 |
μ |
\mu |
13 |
ξ |
\xi |
14 |
π |
\pi |
15 |
υ |
\upsilon |
16 |
ϕ |
\phi |
17 |
φ |
\varphi |
18 |
ω |
\omega |
19 |
ξ |
\xi |
20 |
ψ |
\psi |
21 |
Φ |
\Phi |
22 |
Γ |
\Gamma |
23 |
Λ |
\Lambda |
24 |
Π |
\Pi |
25 |
Ω |
\Omega |
26 |
Ψ |
\Psi |
2. 上標和下標
序號 |
符號 |
代碼 |
1 |
ani |
a_{n_i} |
2 |
∫i=1n |
\int_{i=1}^n |
3 |
∑i=1∞ |
\sum_{i=1}^{\infty} |
4 |
∏i=1n |
\prod_{i=1}^n |
5 |
∪i=1n |
\cup_{i=1}^n |
6 |
∩i=1n |
\cap_{i=1}^n |
7 |
∮i=1n |
\oint_{i=1}^n |
8 |
∐i=1n |
\coprod_{i=1}^n |
9 |
a2 |
a^2 |
10 |
a′ |
a^\prime |
11 |
a˙ |
\dot{a} |
12 |
a¨ |
\ddot{a} |
13 |
a |
\vec{a} |
14 |
ab |
\overrightarrow{ab} |
15 |
ab |
\overleftarrow{ab} |
16 |
abc |
\widehat{abc} |
17 |
ab⌢ |
\overset{\frown}{ab} |
18 |
abc |
\overline{abc} |
19 |
abc |
\widetilde{abc} |
20 |
abc |
\underline{abc} |
21 |
1+2+⋯+100 |
\overbrace{1+2+\cdots+100} |
22 |
1+2+⋯+100 |
\underbrace{1+2+\cdots + 100} |
23 |
50501+2+⋯=?+100 |
\underbrace{1 + \overbrace{2+\cdots}^{{}=?}+100}_{\text{5050}} |
24 |
f′(x) |
f'(x) |
3. 函數
序號 |
符號 |
代碼 |
1 |
sin |
\sin |
2 |
cos |
\cos |
3 |
tan |
\tan |
4 |
csc |
\csc |
5 |
cosh |
\cosh |
6 |
arcsin |
\arcsin |
7 |
arctan |
\arctann |
4. 分數、求和求積、極限積分二項式
序號 |
符號 |
代碼 |
1 |
hf(x+h)−f(x) |
\frac{f(x+h)-f(x)}{h} |
2 |
a0+a1+a2+a3+⋯111 |
a_0+\cfrac{1}{a_1+\cfrac{1}{a_2+\cfrac{1}{a_3+\cdots}}} |
3 |
∑i=1Ni2 |
\sum_{i=1}^N i^2 |
4 |
i=1∑Ni2 |
\sum\limits_{i=1}^N i^2 |
5 |
∏k=1Nk2 |
\prod_{k=1}^N k^2 |
6 |
limn→+∞n1 |
\lim_{n \to +\infty}\frac{1}{n} |
7 |
n→+∞limn1 |
\lim\limits_{n \to +\infty}\frac{1}{n} |
8 |
∫01xdx |
\int_{0}^{1} x\mathrm{d}x |
9 |
∬0nxydxdy |
\iint_{0}^{n} xy \mathrm{d}x\mathrm{d}y |
10 |
∮Cx2dx+y2dy |
\oint_{C} x^2\mathrm{d}x + y^2\mathrm{d}y |
11 |
(kn) |
\binom{n}{k} |
5. 括號
序號 |
符號 |
代碼 |
1 |
(x+y) |
(x+y) |
2 |
[x+y] |
[x+y] |
3 |
{x+y} |
\{ x+y \} |
4 |
⟨x+y⟩ |
\langle x+y \rangle |
5 |
{x+y} |
\{ x+y \} |
6 |
∣x+y∣ |
\vert x+y\vert |
7 |
∥x+y∥ |
\|x+y\| |
8 |
⌈ |
\big \lceil |
9 |
⌉ |
\big \rceil |
10 |
⌊ |
\big \lfloor |
11 |
⌋ |
\big \rfloor |
6. 集合符號
序號 |
符號 |
代碼 |
1 |
∀ |
\forall |
2 |
∃ |
\exists |
3 |
∅ |
\emptyset |
4 |
∈ |
\in |
5 |
∋ |
\ni |
6 |
|
\not |
7 |
∈/ |
\notin |
8 |
⊂ |
\subset |
9 |
⊆ |
\subseteq |
10 |
⊃ |
\supset |
11 |
⊇ |
\supseteq |
7. 運算符
序號 |
符號 |
代碼 |
1 |
+ |
+ |
2 |
− |
- |
3 |
× |
\times |
4 |
÷ |
\div |
5 |
⊕ |
\oplus |
6 |
∧ |
\land |
7 |
∨ |
\lor |
8 |
¬ |
\lnot |
9 |
& |
\And |
10 |
x |
\sqrt{x} |
11 |
nx |
\sqrt[n]{x} |
12 |
= |
= |
13 |
≐ |
\doteq |
14 |
= |
\ne |
15 |
= |
\neq |
16 |
≡ |
\equiv |
17 |
≡ |
\not \equiv |
18 |
≤ |
\leq |
19 |
≥ |
\geq |
20 |
∼ |
\sim |
21 |
≃ |
\simeq |
22 |
≅ |
\cong |
23 |
≈ |
\approx |
24 |
≍ |
\asymp |
25 |
∝ |
\propto |
8. 箭頭
序號 |
符號 |
代碼 |
1 |
← |
\leftarrow |
2 |
→ |
\rightarrow |
3 |
⇐ |
\Leftarrow |
4 |
⇒ |
\Rightarrow |
5 |
↔ |
\leftrightarrow |
6 |
↼ |
\leftharpoonup |
7 |
↽ |
\leftharpoondown |
8 |
⇌ |
\rightleftharpoons |
9 |
↑ |
\uparrow |
10 |
⇑ |
\Uparrow |
11 |
↓ |
\downarrow |
12 |
⇓ |
\Downarrow |
13 |
↕ |
\updownarrow |
14 |
⇕ |
\Updownarrow |
15 |
↗ |
\nearrow |
16 |
↘ |
\searrow |
17 |
↙ |
\swarrow |
18 |
↖ |
\nwarrow |
9. 更多
LaTex符號官方文檔: https://www.rpi.edu/dept/arc/training/latex/LaTeX_symbols.pdf