%
% Things dealing with arrows in a category. Or functions, basically.
%

% The identity operator/arrow on its argument.
\newcommand*{\identity}[1]{ \operatorname{id}_{{#1}} }

% The composition of two arrows/functions. For example, the
% composition of g with f is \compose{g}{f}\of{x} === g\of{f\of{x}}.
\newcommand*{\compose}[2]{ {#1}\circ{#2} }
