src/ZF/Constructible/WF_absolute.thy
changeset 13647 7f6f0ffc45c3
parent 13634 99a593b49b04
child 16417 9bc16273c2d4
     1.1 --- a/src/ZF/Constructible/WF_absolute.thy	Mon Oct 14 10:44:32 2002 +0200
     1.2 +++ b/src/ZF/Constructible/WF_absolute.thy	Mon Oct 14 11:32:00 2002 +0200
     1.3 @@ -3,7 +3,7 @@
     1.4      Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
     1.5  *)
     1.6  
     1.7 -header {*Absoluteness for Well-Founded Relations and Well-Founded Recursion*}
     1.8 +header {*Absoluteness of Well-Founded Recursion*}
     1.9  
    1.10  theory WF_absolute = WFrec:
    1.11  
    1.12 @@ -175,13 +175,8 @@
    1.13    apply (simp_all add: trancl_type [THEN field_rel_subset])
    1.14  done
    1.15  
    1.16 -text{*Relativized to M: Every well-founded relation is a subset of some
    1.17 -inverse image of an ordinal.  Key step is the construction (in M) of a
    1.18 -rank function.*}
    1.19  
    1.20 -
    1.21 -
    1.22 -text{*absoluteness for wfrec-defined functions.*}
    1.23 +text{*Absoluteness for wfrec-defined functions.*}
    1.24  
    1.25  (*first use is_recfun, then M_is_recfun*)
    1.26