\startenvironment notation

\usesymbols[fontawesome]

% Pijlen met text erboven
\definemathstackers [arrowstack] [voffset=-.7\mathexheight, topcommand=\m]
\definemathextensible [arrowstack] [tot] ["27F6]

\define\checkok{\scale[height=.5em]{\symbol[fontawesome][ok]}} % ✓
\define\checknok{\scale[height=.5em]{\symbol[fontawesome][remove]}} % find a font with ✗

\define\coffee{\!\scale[height=.5em]{\symbol[fontawesome][coffee]}} % coffe cup
\define\bomb{\!\scale[height=.65em]{\symbol[fontawesome][]}} % bomb
\define\money{\scale[height=.6em]{\symbol[fontawesome][eur]}\,} % euro sign + space

\define\playstop{\scale[height=.5em]{\raise.15ex\hbox{\symbol[fontawesome][play]\symbol[fontawesome][pause]}}} % play / stop symbol
\define\spin{\scale[height=.6em]{\symbol[fontawesome][repeat]}} % spinning symbol
%\define\spin{\kw{spd}} % spinning symbol

\define[1]\Fam{\mathcal{#1}}
\define\lang{\mathcal{L}}
\define\autom{\mathcal{A}}
\define\bigO{\mathcal{O}}

\define\pref{pref}
\define\suff{suff}
\define\lca{lca}

% Of misschien toch \ss?
\define[1]\kw{\text{\tt #1}}

% L* algorithms
\define\LStar{{\tt L}$^{\ast}$}
\define\NLStar{{\tt NL}$^{\ast}$}
\define\nLStar{$\nu$\LStar{}}
\define\nLStarCol{$\nu${\tt L}$^{\ast}_{\text{col}}$}
\define\nNLStar{$\nu$\NLStar{}}

% Libraries
\define\ONS{{\sc Ons}}
\define\NLambda{{\sc Nλ}}
\define\LOIS{{\sc Lois}}

\define\cpp{{C++}}
\define\haskell{{Haskell}}

% Maths
\define\N{\naturalnumbers}
\define\Q{\rationals}
\define\EAlph{\mathbb{A}}
\define\atoms{\EAlph}
\define\Perm{Perm}
\define\id{id}
\define\supp{{\tt supp}}
\define\orb{{\tt orb}}
\define\union{\cup}
\define\Union{\bigcup}
\define\rowunion{\sqcup}
\define\Rowunion{\bigsqcup}
\define\rowincl{\sqsubseteq}
\define\rowincls{\sqsubset}
\define[1]\lder{{#1}^{-1}}
\define[2]\restr{{#1}|_{#2}}

\define\ext{ext}
\define\Nsize{N}
\define\Sym{Sym}
\define[2]\swap{(#1 \, #2)}
\define\Pm{\Perm(\atoms)}

\define\Lint{\mathcal{L}_{\text{int}}}
\define\Lmax{\mathcal{L}_{\text{max}}}

% language extension
\define\Lext{{\cdot}}



\define\Put{\kw{Put}}
\define\Pop{\kw{Pop}}
\define\Null{\kw{Null}}

\define\perm{\text{\ss Pm}}
\define\sb{\text{\ss Sb}}

\define\MSet{{M\text{-}{Set}}}
\define\MNom{{M\text{-}{Nom}}}
\define\permset{{\perm\text{-}{Set}}}
\define\permnom{{\perm\text{-}{Nom}}}
\define\sbset{{\sb\text{-}{Set}}}
\define\sbnom{{\sb\text{-}{Nom}}}

\define\sepprod{\mathbin{\,\ast\,}}
\define\wandtob{{{-}\!\!{-}\!\!\ast}}
\define\wandto{\mathrel{\wandtob}}
\define\separated{\mathrel{\#}}

\define\pow{\mathcal{P}}

\define\fsto{\mathrel{{\to}_{\text{\rm fs}}}}
\define\sbto{\mathrel{{\to}_{\text{\rm fs}}^{\sb}}}
\define\permto{\mathrel{{\to}_{\text{\rm fs}}^{\perm}}}
\define\mto{\mathrel{{\to}_{\text{\rm fs}}^{M}}}

\define\sa{B_*}

\define\dom{dom}
\define\ev{ev}
\define\bot{{\perp}}

\stopenvironment