notes on computers and other stuff
Sunday, December 16, 2012
Math test
This is a test of MathJax.
A
::=
1
|
A
×
B
|
A
→
B
|
N
e
::=
(
)
|
(
e
,
e
)
|
π
1
e
|
π
2
e
|
λ
x
.
e
|
e
e
′
|
z
|
s
(
e
)
|
i
t
e
r
(
e
,
z
→
e
z
,
s
(
x
)
→
e
s
)
|
x
|
e
:
A
Γ
::=
⋅
|
Γ
,
x
:
A
x
:
A
∈
Γ
Γ
⊢
x
:
A
Γ
⊢
(
)
:
1
Γ
⊢
e
1
:
A
1
Γ
⊢
e
2
:
A
2
Γ
⊢
(
e
1
,
e
2
)
:
A
1
×
A
2
Γ
⊢
e
:
A
1
×
A
2
Γ
⊢
π
i
(
e
)
:
A
i
Γ
,
x
:
A
⊢
e
:
B
Γ
⊢
λ
x
.
e
:
A
→
B
Γ
⊢
e
:
A
→
B
Γ
⊢
e
′
:
A
Γ
⊢
e
e
′
:
B
Γ
⊢
z
:
N
Γ
⊢
e
:
N
Γ
⊢
s
(
e
)
:
N
Γ
⊢
e
:
N
Γ
⊢
e
z
:
A
Γ
,
x
:
A
⊢
e
s
:
A
Γ
⊢
i
t
e
r
(
e
,
z
→
e
z
,
s
(
x
)
→
e
s
)
:
A
Γ
⊢
e
:
A
Γ
⊢
(
e
:
A
)
:
A
It seems to work!
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