(12steps total)
PrintForm
Definitions
DiscreteMath
Sections
DiscrMathExt
Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
bij
imp
exists
inv
version2
1
2
1
1.
A
: Type
2.
B
: Type
3.
f
:
A
B
4. Inj(
A
;
B
;
f
)
5. Surj(
A
;
B
;
f
)
6.
b
:
B
.
!
a
:
A
.
f
(
a
) =
b
7.
g
:
B
A
8.
b
:
B
.
f
(
g
(
b
)) =
b
InvFuns(
A
;
B
;
f
;
g
)
By:
Analyze
Generated subgoal:
1
9.
x
:
A
g
(
f
(
x
)) =
x
2
steps
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
(12steps total)
PrintForm
Definitions
DiscreteMath
Sections
DiscrMathExt
Doc