Nuprl Lemma : not_functionality_wrt_iff
12,41
postcript
pdf
P
,
Q
:
. (
P
Q
)
((
P
)
(
Q
))
latex
ProofTree
Definitions
t
T
,
P
Q
,
P
&
Q
,
A
,
P
Q
,
P
Q
,
,
x
:
A
.
B
(
x
)
Lemmas
iff
wf
,
false
wf
origin
P, Q:
. (P 
Q) ((
P) (Q))
P, Q:. (P Q) ((P) (Q))
T QA Q Qx:A. B(x)