(13steps total)
PrintForm
Definitions
Lemmas
DiscreteMath
Sections
DiscrMathExt
Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
ooc
preserves
dededkind
inf
1
1
1
1
1.
A
: Type
2.
B
: Type
3.
f
:
A
B
4.
g
:
B
A
5. InvFuns(
A
;
B
;
f
;
g
)
6.
a
:
A
7.
h
:
A
A
8. Inj(
A
;
A
;
h
)
9.
(
x
:
A
.
h
(
x
) =
a
)
Inj(
B
;
A
;
g
)
By:
BackThru:
Thm*
InvFuns(
A
;
B
;
f
;
g
)
Inj(
B
;
A
;
g
) Using:[
f
]
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
(13steps total)
PrintForm
Definitions
Lemmas
DiscreteMath
Sections
DiscrMathExt
Doc
B
(
x:A. h(x) = a)
Inj(B; A; g)
Inj(B; A; g) Using:[f]
