Adapted from http://www.xm1math.net/phpmathpublisher/doc/help.html.

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

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

Typical commands
  * 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<>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>
  * delim{|}{x}{|} : <m>delim{|}{x}{|}</m>
  * delim{vert}{x}{vert} : <m>delim{vert}{x}{vert}</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:
  * Syntax : tabular{lines description}{columns description}{first_element ... last_element}
  * //lines// : sequence of 1 (draw the horizontal line) or 0 (don't draw the horizontal line) - the length of the sequence=num of lines+1
  * //columns// : sequence of 1 (draw the vertical line) or 0 (don't draw the vertical line) - the length of the sequence=num of columns+1
  * 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>
  
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>