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At: append commutes under list iso


T:Type. Discrete{T} (eq:{T}, L,M:T List. (L @ M)(~eq)(M @ L))

By:
Unfold `list_iso` 0
THEN
UnivCD
THEN
Analyze 0


Generated subgoals:

11. T: Type
2. Discrete{T}
3. eq: {T}
4. L: T List
5. M: T List
(L @ M)(eq)(M @ L)
21. T: Type
2. Discrete{T}
3. eq: {T}
4. L: T List
5. M: T List
(M @ L)(eq)(L @ M)

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(3steps) PrintForm Definitions Lemmas list 3 jlc Sections Support(jlc) Doc