- deleted unneeded function eta_long (now in Pure/pattern.ML
- added HOL.min / HOL.max to allowed consts again
- added final simplification step with presburger_ss to
preprocessor again
(*<*)
theory fakenat = Main:;
(*>*)
text{*\noindent
The type \tydx{nat} of natural
numbers is predefined to have the constructors \cdx{0} and~\cdx{Suc}. It behaves as if it were declared like this:
*}
datatype nat = 0 | Suc nat
(*<*)
end
(*>*)