Nuprl Lemma : predicate_equivalent_inversion
11,40
postcript
pdf
T
:Type,
P1
,
P2
:(
T
).
P1
P2
P2
P1
latex
Definitions
Type
,
t
T
,
,
x
:
A
B
(
x
)
,
f
(
a
)
,
x
:
A
.
B
(
x
)
,
P
Q
,
P
Q
,
P
Q
,
P
&
Q
,
x
:
A
B
(
x
)
,
P1
P2
Lemmas
iff
wf
origin
T:Type, P1, P2:(T
). P1 
P2 P2 P1 T:Type, P1, P2:(T). P1 P2 P2 P1 
TB(x)x:A. B(x) Q Q Q
B(x) P2