(3steps total)
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Lemmas
mb
list
1
Sections
MarkB
generic
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IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
l
member
decidable
T
:Type,
x
:
T
,
l
:
T
List. (
y
:
T
. Dec(
x
=
y
))
Dec((
x
l
))
By:
Auto THEN All (Unfold `decidable`) THEN ListInd -2
Generated subgoals:
1
1.
T
: Type
2.
x
:
T
3.
T
List
4.
y
:
T
.
x
=
y
x
=
y
(
x
nil)
(
x
nil)
1
step
2
1.
T
: Type
2.
x
:
T
3.
T
List
4.
y
:
T
.
x
=
y
x
=
y
5.
u
:
T
6.
v
:
T
List
7. (
x
v
)
(
x
v
)
(
x
[
u
/
v
])
(
x
[
u
/
v
])
1
step
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
(3steps total)
PrintForm
Definitions
Lemmas
mb
list
1
Sections
MarkB
generic
Doc