(8steps total) PrintForm Definitions Lemmas mb event system 1 Sections EventSystems Doc
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At: member-concat 1 2

1. T : Type
2. (T List) List
3. u : T List
4. v : (T List) List
5. x:T. (x  concat(v))  (l:T List. (l  v) & (x  l))
6. x : T
7. (x  concat(v))
  l:T List. l = u  (l  v) & (x  l)


By: FwdThru -3 [-1] THEN Obvious


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About:
listuniverseequalandorallexists
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(8steps total) PrintForm Definitions Lemmas mb event system 1 Sections EventSystems Doc