Nuprl Lemma : implies_antisymmetry
9,38
postcript
pdf
P
,
Q
:
. (
P
Q
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(
Q
P
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(
P
Q
)
latex
ProofTree
Definitions
t
T
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P
Q
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P
Q
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P
Q
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P
Q
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x
:
A
.
B
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x
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origin
P,Q:
. (P 
Q) (Q P) (P 
Q)
P,Q:. (P Q) (Q P) (P Q)
T Q
Q Q Qx:A. B(x)