Nuprl Lemma : es-E-interface-strong-subtype
11,40
postcript
pdf
es
:ES,
X
:AbsInterface(Top). strong-subtype(E(
X
);E)
latex
Definitions
strong-subtype(
A
;
B
)
,
x
:
A
B
(
x
)
,
x
:
A
.
B
(
x
)
,
E
,
ES
,
AbsInterface(
A
)
,
P
Q
,
x
.
t
(
x
)
,
b
,
{
x
:
A
|
B
(
x
)}
,
Top
,
E(
X
)
Lemmas
event
system
wf
,
top
wf
,
es-interface
wf
,
assert
wf
,
strong-subtype-set3
,
strong-subtype
wf
,
es-E
wf
,
strong-subtype-self
origin
es:ES, X:AbsInterface(Top). strong-subtype(E(X);E) es:ES, X:AbsInterface(Top). strong-subtype(E(X);E) 
B(x)x:A. B(x)
Q
x. t(x)
b