Nuprl Lemma : comb_for_grp_leq_wf
13,42
postcript
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(
g
,
a
,
b
,
z
.
a
b
)
g
:GrpSig
|
g
|
|
g
|
(
True)
latex
Up
groups
1
Definitions
t
T
,
x
:
A
.
B
(
x
)
,
,
T
Lemmas
grp
sig
wf
,
grp
car
wf
,
true
wf
,
squash
wf
,
grp
leq
wf
origin
g,a,b,z. a 
b) 
g:GrpSig
|g||g|(
True)
g,a,b,z. a b) g:GrpSig|g||g|(True) T
x:A. B(x)T