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At: cons neq nil

  T:Type, h:Tt:T List. h.t = nil

By: Unfold `not` 0 THEN UnivCD


Generated subgoal:

1 1. T : Type
2. h : T
3. t : T List
4. h.t = nil
  False

2 steps

About:
listconsniluniverseequalfalseall
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