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Topological Proof

  1. Sep 8, 2009 #1
    1. The problem statement, all variables and given/known data

    Let boundary = bdy, ∩ = intersection and C = contained. Show that the bdy (A) ∩ bdy(B) C bdy (A ∩ B).

    2. Relevant equations


    3. The attempt at a solution

    I can draw a diagram of this idea and visualize it my mind, but I cannot formally show this (this is second proof I've attempted). Can anyone help me get it started?
     
  2. jcsd
  3. Sep 9, 2009 #2

    Mark44

    Staff: Mentor

    And what are A and B?
     
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