author lcp
Tue, 25 Apr 1995 10:56:49 +0200
changeset 1069 66efd8f90fbd
parent 803 4c8333ab3eae
child 1296 ae31bb7774a7
permissions -rw-r--r--
Now loads the theory "Let". Could add it to FOL, but this appears to be incompatible with CCL.

(*  Title: 	ZF/ROOT
    ID:         $Id$
    Author: 	Lawrence C Paulson, Cambridge University Computer Laboratory
    Copyright   1993  University of Cambridge

Adds Zermelo-Fraenkel Set Theory to a database containing First-Order Logic.

This theory is the work of Martin Coen, Philippe Noel and Lawrence Paulson.

val banner = "ZF Set Theory (in FOL)";
writeln banner;

(*For Pure/tactic??  A crude way of adding structure to rules*)
fun CHECK_SOLVED (Tactic tf) = 
  Tactic (fn state => 
    case Sequence.pull (tf state) of
	None => error"DO_GOAL: tactic list failed"
      | Some(x,_) => 
		if has_fewer_prems 1 x then
		    Sequence.cons(x, Sequence.null)
		else (writeln"DO_GOAL: unsolved goals!!";
		      writeln"Final proof state was ...";
		      print_goals (!goals_limit) x;
		      raise ERROR));


print_depth 1;

(*Add user sections for inductive/datatype definitions*)
use     "../Pure/section_utils.ML";
use     "thy_syntax.ML";

use_thy "Let";
use_thy "InfDatatype";
use_thy "List";
use_thy "EquivClass";

(*printing functions are inherited from FOL*)
print_depth 8;

val ZF_build_completed = ();	(*indicate successful build*)