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Homework Help: Partial density proof for rationals in the reals

  1. Oct 3, 2008 #1
    I have a proof dealing with density of the rationals. It looks very similar to a proof we did in class.

    I also posted my question on Cramster since it is easy for plugging in mathematical symbols:

    http://qaboard.cramster.com/advanced-math-topic-5-338957-cpi0.aspx" [Broken]
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Oct 3, 2008 #2


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    There's no reason to repeat the whole proof if you've already shown if x<y there is a rational between them. If x<y, then x/u<y/u so there is a rational x/u<r<y/u. You are practically done.
    Last edited: Oct 4, 2008
  4. Oct 5, 2008 #3
    Awesome, thanks!
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