Deleted Library.option type.
(* Title: HOL/AxClasses/Product.thy
ID: $Id$
Author: Markus Wenzel, TU Muenchen
*)
theory Product = Main:
axclass product < type
consts
product :: "'a::product => 'a => 'a" (infixl "[*]" 70)
instance bool :: product
by intro_classes
defs (overloaded)
product_bool_def: "x [*] y == x & y"
end