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How supposed I imagine the following equations?

  1. Sep 10, 2007 #1
    What is SUBSET on “open subset of R[tex]^{n}[/tex]"?
    How supposed I imagine the following equations?

    u : UR
     
  2. jcsd
  3. Sep 10, 2007 #2
    it's the same as any other subset.

    U is a subset of P if

    for all x in U x is also in P.

    So what does it mean to be an element of an open set of R^n?

    u is probably a function.

    It assigns each element in U to one element in R
     
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