|
1478
|
1 |
(* Title: ZF/ex/Acc.thy
|
|
515
|
2 |
ID: $Id$
|
|
1478
|
3 |
Author: Lawrence C Paulson, Cambridge University Computer Laboratory
|
|
515
|
4 |
Copyright 1994 University of Cambridge
|
|
|
5 |
|
|
|
6 |
Inductive definition of acc(r)
|
|
|
7 |
|
|
|
8 |
See Ch. Paulin-Mohring, Inductive Definitions in the System Coq.
|
|
|
9 |
Research Report 92-49, LIP, ENS Lyon. Dec 1992.
|
|
|
10 |
*)
|
|
|
11 |
|
|
809
|
12 |
Acc = WF + Inductive +
|
|
515
|
13 |
|
|
|
14 |
consts
|
|
1401
|
15 |
acc :: i=>i
|
|
515
|
16 |
|
|
|
17 |
inductive
|
|
|
18 |
domains "acc(r)" <= "field(r)"
|
|
|
19 |
intrs
|
|
|
20 |
vimage "[| r-``{a}: Pow(acc(r)); a: field(r) |] ==> a: acc(r)"
|
|
|
21 |
monos "[Pow_mono]"
|
|
|
22 |
|
|
|
23 |
end
|