(27steps)
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discrete
jlc
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At:
discrete
union
1
1
1
1.
T1:
Type{i}
2.
T2:
Type{j}
3.
x,y:T1. Dec(x = y)
4.
x,y:T2. Dec(x = y)
5.
x2:
T1
6.
x1:
T1
inl(x2) = inl(x1)
T1+T2
inl(x2) = inl(x1)
T1+T2
By:
With x2 (Analyze 3)
THEN
With x1 (Analyze -1)
THEN
Analyze -1
Generated subgoals:
1
3.
x,y:T2. Dec(x = y)
4.
x2:
T1
5.
x1:
T1
6.
x2 = x1
inl(x2) = inl(x1)
T1+T2
inl(x2) = inl(x1)
T1+T2
2
3.
x,y:T2. Dec(x = y)
4.
x2:
T1
5.
x1:
T1
6.
x2 = x1
inl(x2) = inl(x1)
T1+T2
inl(x2) = inl(x1)
T1+T2
About:
(27steps)
PrintForm
Definitions
discrete
jlc
Sections
Support(jlc)
Doc