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At:
hd
is
member
lemma
1
2
1
1
1.
T:
Type
2.
eq:
{T
}
3.
L:
T List
4.
u:
T
5.
v:
T List
6.
||v||
1
hd(v)(
eq) v
7.
||u.v||
1
if eq(u,u)
true
else u(
eq) v fi
By:
Equivalence 2
Generated subgoal:
1
3.
eq
T
T
4.
x:T. eq(x,x)
5.
x,y:T. eq(x,y)
eq(y,x)
6.
x,y,z:T. eq(x,y)
eq(y,z)
eq(x,z)
7.
L:
T List
8.
u:
T
9.
v:
T List
10.
||v||
1
hd(v)(
eq) v
11.
||u.v||
1
if eq(u,u)
true
else u(
eq) v fi
About:
(11steps)
PrintForm
Definitions
list
3
jlc
Sections
Support(jlc)
Doc