Nuprl Lemma : rev_bimplies_wf
13,42
postcript
pdf
p
,
q
:
. (
p
q
)
latex
Up
bool
1
,
bool
1
Definitions
p
q
,
t
T
,
x
:
A
.
B
(
x
)
Lemmas
bool
wf
,
bimplies
wf
origin
p, q:
. (p 
q) 
p, q:. (p q) q Tx:A. B(x)