Nuprl Lemma : rel-rel-plus
0,22
postcript
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T
:Type,
R
:(
T
T
Prop),
x
,
y
:
T
. (
x
R
y
)
(
x
R
^+
y
)
latex
Definitions
x
f
y
,
R
^+
,
t
T
,
Prop
,
P
Q
,
x
:
A
.
B
(
x
)
,
rel_exp(
T
;
R
;
n
)
,
,
x
:
A
.
B
(
x
)
,
i
=
j
,
A
&
B
,
P
&
Q
Lemmas
rel
exp
wf
,
nat
plus
inc
origin
T:Type, R:(T
TProp), x, y:T. (x R y) 
(x R^+ y) T:Type, R:(TTProp), x, y:T. (x R y) (x R^+ y) 
T Qx:A. B(x)
x:A. B(x)
j