(4steps total)
PfGloss
PrintForm
DiscreteMath
Sections
DiscrMathExt
Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
fun
with
inv2
is
inj
1
1
1.
A
: Type
2.
B
: Type
3.
f
:
A
B
4.
g
:
B
A
5.
x
:
A
.
g
(
f
(
x
)) =
x
6.
y
:
B
.
f
(
g
(
y
)) =
y
7.
a1
:
A
8.
a2
:
A
9.
f
(
a1
) =
f
(
a2
)
a1
=
a2
By:
ApFun:
g
to:
f
(
a1
) =
f
(
a2
)
B
Generated subgoal:
1
10.
g
(
f
(
a1
)) =
g
(
f
(
a2
))
a1
=
a2
1
step
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
(4steps total)
PfGloss
PrintForm
DiscreteMath
Sections
DiscrMathExt
Doc
B
x:A. g(f(x)) = x
a1 = a2
B
