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Math Help - sets

  1. #1
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    Post sets

    show that if A and B are sets, A is uncountable, and A is a subset of B, then B is uncountable
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  2. #2
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    What does it mean to be uncountable?
    Can you extend a function from A to all of B?
    Have you proved that every subset of a countable set is countable?
    Last edited by Plato; October 29th 2008 at 01:38 PM.
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