Nuprl Lemma : strong-subtype-eq3
11,40
postcript
pdf
A
,
B
:Type,
b
:
B
,
a
:
A
. strong-subtype(
A
;
B
)
guard(((
b
=
a
B
)
(
b
=
a
A
)))
latex
Definitions
guard(
T
)
Lemmas
strong-subtype-eq2
origin
A,B:Type, b:B, a:A. strong-subtype(A; B) 
guard(((b = a 
B) (b = a A))) A,B:Type, b:B, a:A. strong-subtype(A; B) guard(((b = a B) (b = a A)))