Nuprl Lemma : decidable__iff
13,42
postcript
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P
,
Q
:
. Dec(
P
)
Dec(
Q
)
Dec(
P
Q
)
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core
2
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core
2
Definitions
t
T
,
P
Q
,
P
Q
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P
Q
,
,
x
:
A
.
B
(
x
)
Lemmas
decidable
wf
,
decidable
implies
,
decidable
and
origin
P, Q:
. Dec(P) 
Dec(Q) Dec(P 
Q) P, Q:. Dec(P) Dec(Q) Dec(P Q) 
T Q Q Qx:A. B(x)