To toggle to the math mode, you must use the <m>…</m> tag. The math commands must separated by a space character or surrounded by {}.

<m>x in bbR \ { 1; 2 }</m>

Mathematical Symbol input	Math publisher syntax	Math Jax Syntax
x+y	<m>x+y</m>
x-y	<m>x-y</m>
x*y	<m>x*y</m>
x/y	<m>x/y</m>
x caret y	<m> x caret y </m>
x_y	<m>x_y</m>
x<>y	<m>x<>y</m>
x>y	<m>x>y</m>
x>=y	<m>x>=y</m>
x<y	<m>x<y</m>
x⇐y	<m>x⇐y</m>
(x)	<m>(x)</m>
{x}	<m>{x}</m>
Space
a~b	<m>a~b</m>
Greek
alpha	<m>alpha</m>
beta	<m>beta</m>
gamma	<m>gamma</m>
delta	<m>delta</m>
epsilon	<m>epsilon</m>
varepsilon	<m>varepsilon</m>
zeta	<m>zeta</m>
eta	<m>eta</m>
theta	<m>theta</m>
vartheta	<m>vartheta</m>
iota	<m>iota</m>
kappa	<m>kappa</m>
lambda	<m>lambda</m>
mu	<m>mu</m>
nu	<m>nu</m>
xi	<m>xi</m>
pi	<m>pi</m>
varpi	<m>varpi</m>
rho	<m>rho</m>
varrho	<m>varrho</m>
sigma	<m>sigma</m>
varsigma	<m>varsigma</m>
tau	<m>tau</m>
upsilon	<m>upsilon</m>
phi	<m>phi</m>
varphi	<m>varphi</m>
chi	<m>chi</m>
psi	<m>psi</m>
omega	<m>omega</m>
Gamma	<m>Gamma</m>
Lambda	<m>Lambda</m>
Sigma	<m>Sigma</m>
Psi	<m>Psi</m>
Delta	<m>Delta</m>
Xi	<m>Xi</m>
Upsilon	<m>Upsilon</m>
Omega	<m>Omega</m>
Theta	<m>Theta</m>
Pi	<m>Pi</m>
Phi	<m>Phi</m>
Symbols
infty	<m>infty</m>
in	<m>in</m>
notin	<m>notin</m>
forall	<m>forall</m>
exists	<m>exists</m>
notexists	<m>notexists</m>
partial	<m>partial</m>
approx	<m>approx</m>
pm	<m>pm</m>
inter	<m>inter</m>
union	<m>union</m>
ortho	<m>ortho</m>
parallel	<m>parallel</m>
backslash	<m>backslash</m>
prime	<m>prime</m>
wedge	<m>wedge</m>
vert	<m>vert</m>
lbrace	<m>{</m>
rbrace	<m>}</m>
circ	<m>circ</m>
varnothing	<m>varnothing</m>
subset	<m>subset</m>
notsubset	<m>notsubset</m>
cdots	<m>cdots</m>
vdots	<m>vdots</m>
ddots	<m>ddots</m>
Arrows
left	<m>left</m>
right	<m>right</m>
leftright	<m>leftright</m>
doubleleft	<m>doubleleft</m>
doubleright	<m>doubleright</m>
doubleleftright	<m>doubleleftright</m>
nearrow	<m>nearrow</m>
searrow	<m>searrow</m>
Sets
bbR	<m>bbR</m>
bbN	<m>bbN</m>
bbZ	<m>bbZ</m>
bbC	<m>bbC</m>
Roots and Limits
sqrt{a}	<m>sqrt{a}</m>
root{n}{a}	<m>root{n}{a}</m>
lim{a}{x}	<m>lim{a}{x}</m>
Big Operators
int{a}{b}{x}	<m>int{a}{b}{x}</m>
doubleint{a}{b}{x}	<m>doubleint{a}{b}{x}</m>
tripleint{a}{b}{x}	<m>tripleint{a}{b}{x}</m>
oint{a}{b}{x}	<m>oint{a}{b}{x}</m>
sum{a}{b}{x}	<m>sum{a}{b}{x}</m>
prod{a}{b}{x}	<m>prod{a}{b}{x}</m>
bigcup{a}{b}{x}	<m>bigcup{a}{b}{x}</m>
bigcap{a}{b}{x}	<m>bigcap{a}{b}{x}</m>
Delimiters
delim{[}{x}{]}	<m>delim{[}{x}{]}</m>
delim{]}{x}{]}	<m>delim{]}{x}{]}</m>
delim{[}{x}{[}	<m>delim{[}{x}{[}</m>
delim{]}{x}{[}	<m>delim{]}{x}{[}</m>
delim{lbrace}{x}{rbrace}	<m>delim{lbrace}{x}{rbrace}</m>
deli { line }{x}{line }	<m>delim{ line }{x}{ line }</m>
delim{vert}{x}{vert}	<m>delim{vert}{x}{vert}</m>
Constructions
vec{express}	<m>vec{express}</m>
{express}under{foo}	<m>{express}under{foo}</m>
{express}over{foo}	<m>{express}over{foo}</m>
overline{express}	<m>overline{express}</m>
underline{express}	<m>underline{express}</m>
hat{express}	<m>hat{express}</m>
Matrix
Syntax	matrix{num of lines}{num of columns}{first_element … last_element}
matrix{2}{3}{a b c d e f g}	<m>matrix{2}{3}{a b c d e f g}</m>
tabular{111}{1111}{a b c d e f g}	<m>tabular{111}{1111}{a b c d e f g}</m>
tabular{1001}{101}{1 2 3 4 5 6}	<m>tabular{1001}{101}{1 2 3 4 5 6}</m>