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At: decidable disjoint 1
1. T: Type
2. eq: TT
3. L1: T List
4. L2: T List

Dec(disjoint(eq;L1;L2))
By: ListInd 3
Generated subgoals:

1 Dec(disjoint(eq;nil;L2))
25. u: T
6. v: T List
7. Dec(disjoint(eq;v;L2))
Dec(disjoint(eq;(u.v);L2))

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listconsnilbooldecidablefunctionuniverse

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