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Set theory proof help needed!

  1. Dec 11, 2013 #1
    Hey guys!

    I am new to this forum but saw the helpful posts on set theory proofs and wondered if I could finally get some help with this problem:

    Suppose A, B, C, and D are sets with A⊆C and B⊆D. If A∩B=Ø then C∩D=Ø.

    This is a biconditional so I have to prove it both ways correct?

    Any help would be greatly appreciated!
  2. jcsd
  3. Dec 12, 2013 #2
    This belongs in the homework forum. Do you have some attempt?

    I don't see a biconditional in your statement.
  4. Dec 12, 2013 #3
    Oh my mistake!
  5. Dec 12, 2013 #4

    D H

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    Staff Emeritus
    Science Advisor

    Thread closed as dainty77 posted this question (per R136a1's suggestion) in the homework section.
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