src/HOL/Integ/NatBin.thy
author wenzelm
Tue, 29 Aug 2000 00:55:59 +0200
changeset 9714 79db0e5b7824
parent 9509 0f3ee1f89ca8
child 10574 8f98f0301d67
permissions -rw-r--r--
Simplifier.cong_add_global;

(*  Title:      HOL/NatBin.thy
    ID:         $Id$
    Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
    Copyright   1999  University of Cambridge

Binary arithmetic for the natural numbers

This case is simply reduced to that for the non-negative integers
*)

NatBin = IntPower +

instance
  nat :: number 

defs
  nat_number_of_def
    "number_of v == nat (number_of v)"
     (*::bin=>nat        ::bin=>int*)

end