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#1 2010-10-26 14:44:42

alice 9
Member
Registered: 2010-10-06
Posts: 6

accumulation points or limits points

What is the set of accumulation points of the irrational numbers?
Give an example of abounded set of real number with exactly three accumulation points?
Let A  subset of R   A ⊊ R  and let x in R show that x is an accumulation point of A  if and only if there exists of a sequence of distinct points in A that converge to x?


any help will be extremely appreciated

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#2 2010-10-27 10:21:08

alice 9
Member
Registered: 2010-10-06
Posts: 6

Re: accumulation points or limits points

ok just any answers to the first question?

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#3 2010-10-27 10:36:12

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: accumulation points or limits points

Hi alice 9;

Have you checked the other forums you have posted this question on? What did you not like about their answers?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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