At: enum inj 1 1 7
1. q: 

2. l1:
q*
3. l2:
q*
4.
(q
||l1||
)+en(l1) =
(q
||l2||
)+en(l2)
5. ||l1|| = ||l2||
& en(l1) = en(l2)
l1 = l2
By: Inst
Thm*
n:
, m:
, l1,l2:
n*. ||l1|| = m & ||l2|| = m 
en(l1) = en(l2) 
l1 = l2
[q;||l1||;l1;l2]
Generated subgoals:None
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