Nuprl Lemma : m-at_wf
0,22
postcript
pdf
i
:Id,
M
:MsgA. (@
i
M
)
Dsys
latex
Definitions
Id
,
t
T
,
MsgA
,
,
IdDeq
,
x
:
A
.
B
(
x
)
,
eqof(
d
)
,
if
b
t
else
f
fi
,
(@
i
M
)
,
Dsys
Lemmas
ifthenelse
wf
,
eqof
wf
,
id-deq
wf
,
ma-empty
wf
,
msga
wf
,
Id
wf
origin
i:Id, M:MsgA. (@i M) 
Dsys i:Id, M:MsgA. (@i M) Dsys Tx:A. B(x)
t else f fi