Consequences of the change from [ := ] to ( := ) in theory Update.
(* Title: HOL/AxClasses/Tutorial/Monoid.thy
ID: $Id$
Author: Markus Wenzel, TU Muenchen
Define class "monoid".
*)
Monoid = Sigs +
(* monoids *)
axclass
monoid < term
assoc "(x <*> y) <*> z = x <*> (y <*> z)"
left_unit "1 <*> x = x"
right_unit "x <*> 1 = x"
end