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Homework Help: Intersection of Product spaces

  1. Feb 1, 2009 #1
    Give an example where
    (A1 intersect A2)X(B1 intersect B2) is strictly contained in (A1XB1)intersect (A2XB2).

    For the union instead of the intersection I can see the reverse strict containment easily just by drawing. But for the intersection for some reason, I cannot see when the containment can be strict.
  2. jcsd
  3. Feb 2, 2009 #2


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    Hi math8! :smile:

    I think you're right … I think they're the same. :confused:
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