Nuprl Lemma : ax_choice
13,42
postcript
pdf
A
,
B
:Type,
Q
:(
A
B
). (
x
:
A
.
y
:
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))
(
f
:
A
B
. (
x
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A
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(
x
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f
(
x
))))
latex
Up
fun
1
,
fun
1
Definitions
t
T
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x
(
s1
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s2
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A
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P
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Lemmas
pi1
wf
origin
A, B:Type, Q:(A
B
). (x:A. 
y:B. Q(x,y)) 
(f:AB. (x:A. Q(x,f(x)))) A, B:Type, Q:(AB). (x:A. y:B. Q(x,y)) (f:AB. (x:A. Q(x,f(x)))) 
Tx:A. B(x) Qx:A. B(x)
x. t(x)