常用的特殊符号，注意开头和结束的时候务必以\$标记，以下为了节约文件大小，举例时候TYPE都省略了标记符号。

Greek letters: alpha `alpha` beta `beta` chi `chi` delta `delta` Delta `Delta` epsilon `epsilon` varepsilon `varepsilon` eta `eta` gamma `gamma` Gamma `Gamma` iota `iota` kappa `kappa` lambda `lambda` Lambda `Lambda` mu `mu` nu `nu` omega `omega` Omega `Omega` phi `phi` varphi `varphi` Phi `Phi` pi `pi` Pi `Pi` psi `psi` Psi `Psi` rho `rho` sigma `sigma` Sigma `Sigma` tau `tau` theta `theta` vartheta `vartheta` Theta `Theta` upsilon `upsilon` xi `xi` Xi `Xi` zeta `zeta`

Operation symbols
Type See
+ `+`
- `-`
* `*`
** `**`
// `//`
\\ `\\ `
xx `xx`
-: `-:`
@ `@`
o+ `o+`
ox `ox`
o. `o.`
sum `sum`
prod `prod`
^^ `^^`
^^^ `^^^`
vv `vv`
vvv `vvv`
nn `nn`
nnn `nnn`
uu `uu`
uuu `uuu`
 Relation symbols
Type See
= `=`
!= `!=`
< `<`
> `>`
<= `<=`
>= `>=`
-< `-<`
>- `>-`
in `in`
!in `notin`
sub `sub`
sup `sup`
sube `sube`
supe `supe`
-= `-=`
~= `~=`
~~ `~~`
prop `prop`
 Logical symbols
Type See
and `and`
or `or`
not `not`
=> `=>`
if `if`
iff `iff`
AA `AA`
EE `EE`
_|_ `_|_`
TT `TT`
|-- `|--`
|== `|==`

Grouping brackets

Type See
( `(`
) `)`
[ `[`
] `]`
{ `{`
} `}`
(: `(:`
:) `:)`
{: `{:`
:} `{::}`

 Miscellaneous symbols
Type See
int `int`
oint `oint`
del `del`
grad `grad`
+- `+-`
O/ `O/`
oo `oo`
aleph `aleph`
/_ `/_`
:. `:.`
|...| |`...`|
|cdots| |`cdots`|
vdots `vdots`
ddots `ddots`
|\ | |`\ `|
|quad| |`quad`|
diamond `diamond`
square `square`
|__ `|__`
__| `__|`
|~ `|~`
~| `~|`
CC `CC`
NN `NN`
QQ `QQ`
RR `RR`
ZZ `ZZ`
 Standard functions
Type See
sin `sin`
cos `cos`
tan `tan`
csc `csc`
sec `sec`
cot `cot`
sinh `sinh`
cosh `cosh`
tanh `tanh`
log `log`
ln `ln`
det `det`
dim `dim`
lim `lim`
mod `mod`
gcd `gcd`
lcm `lcm`
min `min`
max `max`

Accents

Type See
hat x `hat x`
bar x `bar x`
ul x `ul x`
vec x `vec x`
dot x `dot x`
ddot x `ddot x`

 Arrows
Type See
uarr `uarr`
darr `darr`
rarr `rarr`
-> `->`
|-> `|->`
larr `larr`
harr `harr`
rArr `rArr`
lArr `lArr`
hArr `hArr`

Font commands

Type See
bb A `bb A`
bbb A `bbb A`
cc A `cc A`
tt A `tt A`
fr A `fr A`
sf A `sf A`