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[topology] new kind of separation axiom? where does it fit in?

  1. Dec 25, 2011 #1
    Hello,

    Just out of curiosity, where would following "seperation axiom" fit in?

    So far I'm only acquainted with the T1, T2, T3 and T4 axioms (and the notion of completely regular in relation to the Urysohn theorem).
     
    Last edited: Dec 25, 2011
  2. jcsd
  3. Dec 25, 2011 #2

    micromass

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    You mean A and B disjoint right??

    Can't you always take [itex]U=X\setminus A[/itex]??
     
  4. Dec 26, 2011 #3
    Haha...

    (and yes I meant A and B disjoint)

    It seems I hadn't thought this one true :) thanks a lot!
     
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