Nuprl Lemma : compose_wf
12,41
postcript
pdf
A
,
B
,
C
:Type,
f
:(
B
C
),
g
:(
A
B
). (
f
o
g
)
A
C
latex
ProofTree
Definitions
f
o
g
,
t
T
,
x
:
A
.
B
(
x
)
origin
A, B, C:Type, f:(B
C), g:(AB). (f o g) 
AC
A, B, C:Type, f:(BC), g:(AB). (f o g) AC
Tx:A. B(x)