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AsciiMath

 1 year ago
source link: http://asciimath.org/
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Syntax

Most AsciiMath symbols attempt to mimic in text what they look like rendered, like oo for `oo`. Many symbols can also be displayed using a TeX alternative, but a preceeding backslash is not required.

Type TeX alt See
+ `+`
- `-`
* cdot `*`
** ast `**`
*** star `***`
// `//`
\\ backslash
setminus		 `\\`
xx times `xx`
-: div `-:`
|>< ltimes `|><`
><| rtimes `><|`
|><| bowtie `|><|`
@ circ `@`
o+ oplus `o+`
ox otimes `ox`
o. odot `o.`
sum `sum`
prod `prod`
^^ wedge `^^`
^^^ bigwedge `^^^`
vv vee `vv`
vvv bigvee `vvv`
nn cap `nn`
nnn bigcap `nnn`
uu cup `uu`
uuu bigcup `uuu`
Type TeX alt See
2/3 frac{2}{3} `2/3`
2^3 `2^3`
sqrt x `sqrt x`
root(3)(x) `root(3)(x)`
int `int`
oint `oint`
del partial `del`
grad nabla `grad`
+- pm `+-`
O/ emptyset `O/`
oo infty `oo`
aleph `aleph`
:. therefore `:.`
:' because `:'`
|...| |ldots| `|...|`
|cdots| `|cdots|`
vdots `vdots`
ddots `ddots`
|\ | `|\ |`
|quad| `|quad|`
/_ angle `/_`
frown `frown`
/_\ triangle `/_\\`
diamond `diamond`
square `square`
|__ lfloor `|__`
__| rfloor `__|`
|~ lceiling `|~`
~| rceiling `~|`
CC `CC`
NN `NN`
QQ `QQ`
RR `RR`
ZZ `ZZ`
"hi" text(hi) `"hi"`
Type TeX alt See
= `=`
!= ne `!=`
< lt `<`
> gt `>`
<= le `<=`
>= ge `>=`
mlt ll `mlt`
mgt gg `mgt`
-< prec `-<`
-<= preceq `-<=`
>- succ `>-`
>-= succeq `>-=`
in `in`
!in notin `!in`
sub subset `sub`
sup supset `sup`
sube subseteq `sube`
supe supseteq `supe`
-= equiv `-=`
~= cong `~=`
~~ approx `~~`
prop propto `prop`
Type TeX alt See
and `and`
or `or`
not neg `not`
=> implies `=>`
if `if`
<=> iff `iff`
AA forall `AA`
EE exists `EE`
_|_ bot `_|_`
TT top `TT`
|-- vdash `|--`
|== models `|==`
Type TeX alt See
( `(`
) `)`
[ `[`
] `]`
{ `{`
} `}`
(: langle `(:`
:) rangle `:)`
<< `<<`
>> `>>`
{: x ) `{: x )`
( x :} `( x :}`
abs(x) `abs(x)`
floor(x) `floor(x)`
ceil(x) `ceil(x)`
norm(vecx) `norm(vecx)`
Type TeX alt See
uarr uparrow `uarr`
darr downarrow `darr`
rarr rightarrow `rarr`
-> to `->`
>-> rightarrowtail `>->`
->> twoheadrightarrow `->>`
>->> twoheadrightarrowtail `>->>`
|-> mapsto `|->`
larr leftarrow `larr`
harr leftrightarrow `harr`
rArr Rightarrow `rArr`
lArr Leftarrow `lArr`
hArr Leftrightarrow `hArr`
Type TeX alt See
hat x `hat x`
bar x overline x `bar x`
ul x underline x `ul x`
vec x `vec x`
tilde x `tilde x`
dot x `dot x`
ddot x `ddot x`
overset(x)(=) overset(x)(=) `overset(x)(=)`
underset(x)(=) `underset(x)(=)`
ubrace(1+2) underbrace(1+2) `ubrace(1+2)`
obrace(1+2) overbrace(1+2) `obrace(1+2)`
color(red)(x) `color(red)(x)`
cancel(x) `cancel(x)`
Type See Type See
alpha `alpha`
beta `beta`
gamma `gamma` Gamma `Gamma`
delta `delta` Delta `Delta`
epsilon `epsilon`
varepsilon `varepsilon`
zeta `zeta`
eta `eta`
theta `theta` Theta `Theta`
vartheta `vartheta`
iota `iota`
kappa `kappa`
lambda `lambda` Lambda `Lambda`
mu `mu`
nu `nu`
xi `xi` Xi `Xi`
pi `pi` Pi `Pi`
rho `rho`
sigma `sigma` Sigma `Sigma`
tau `tau`
upsilon `upsilon`
phi `phi` Phi `Phi`
varphi `varphi`
chi `chi`
psi `psi` Psi `Psi`
omega `omega` Omega `Omega`
Type TeX alt See
bb "AaBbCc" mathbf "AaBbCc" `bb "AaBbCc"`
bbb "AaBbCc" mathbb "AaBbCc" `bbb "AaBbCc"`
cc "AaBbCc" mathcal "AaBbCc" `cc "AaBbCc"`
tt "AaBbCc" mathtt "AaBbCc" `tt "AaBbCc"`
fr "AaBbCc" mathfrak "AaBbCc" `fr "AaBbCc"`
sf "AaBbCc" mathsf "AaBbCc" `sf "AaBbCc"`

Standard Functions

sin, cos, tan, sec, csc, cot, arcsin, arccos, arctan, sinh, cosh, tanh, sech, csch, coth, exp, log, ln, det, dim, mod, gcd, lcm, lub, glb, min, max, f, g.

Special Cases

Matrices: [[a,b],[c,d]] yields to `[[a,b],[c,d]]`

Column vectors: ((a),(b)) yields to `((a),(b))`

Augmented matrices: [[a,b,|,c],[d,e,|,f]] yields to `[[a,b,|,c],[d,e,|,f]]`

Matrices can be used for layout: {(2x,+,17y,=,23),(x,-,y,=,5):} yields `{(2x,+,17y,=,23),(x,-,y,=,5):}`

Complex subscripts: lim_(N->oo) sum_(i=0)^N yields to `lim_(N->oo) sum_(i=0)^N`

Subscripts must come before superscripts: int_0^1 f(x)dx yields to `int_0^1 f(x)dx`

Derivatives: f'(x) = dy/dx yields `f'(x) = dy/dx`
For variables other than x,y,z, or t you will need grouping symbols: (dq)/(dp) for `(dq)/(dp)`

Overbraces and underbraces: ubrace(1+2+3+4)_("4 terms") yields `ubrace(1+2+3+4)_("4 terms")`.
obrace(1+2+3+4)^("4 terms") yields `obrace(1+2+3+4)^("4 terms")`.

Attention: Always try to surround the > and < characters with spaces so that the html parser does not confuse it with an opening or closing tag!

The Grammar

Here is a definition of the grammar used to parse AsciiMath expressions. In the Backus-Naur form given below, the letter on the left of the ::= represents a category of symbols that could be one of the possible sequences of symbols listed on the right. The vertical bar | separates the alternatives.

v ::= [A-Za-z] | greek letters | numbers | other constant symbols
u ::= sqrt | text | bb | other unary symbols for font commands
b ::= frac | root | stackrel | other binary symbols
l ::= ( | [ | { | (: | {: | other left brackets
r ::= ) | ] | } | :) | :} | other right brackets
S ::= v | lEr | uS | bSS             Simple expression
I ::= S_S | S^S | S_S^S | S          Intermediate expression
E ::= IE | I/I                       Expression

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