PrintForm Definitions mb event system 1 Sections EventSystems Doc
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At: map is nil

  A,B:Type, f:(AB), l:A List. map(f;l) = nil  l = nil

By: InductionOnList THEN Reduce 0 THEN ObviousFrom [-1]


Generated subgoals:

None

About:
listnilfunctionuniverseequalall
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PrintForm Definitions mb event system 1 Sections EventSystems Doc