--- a/src/ZF/nat.thy Fri Sep 17 12:53:53 1993 +0200
+++ b/src/ZF/nat.thy Fri Sep 17 16:16:38 1993 +0200
@@ -9,7 +9,7 @@
Nat = Ord + Bool +
consts
nat :: "i"
- nat_case :: "[i, i, i=>i]=>i"
+ nat_case :: "[i, i=>i, i]=>i"
nat_rec :: "[i, i, [i,i]=>i]=>i"
rules
@@ -17,10 +17,10 @@
nat_def "nat == lfp(Inf, %X. {0} Un {succ(i). i:X})"
nat_case_def
- "nat_case(k,a,b) == THE y. k=0 & y=a | (EX x. k=succ(x) & y=b(x))"
+ "nat_case(a,b,k) == THE y. k=0 & y=a | (EX x. k=succ(x) & y=b(x))"
nat_rec_def
"nat_rec(k,a,b) == \
-\ wfrec(Memrel(nat), k, %n f. nat_case(n, a, %m. b(m, f`m)))"
+\ wfrec(Memrel(nat), k, %n f. nat_case(a, %m. b(m, f`m), n))"
end