'Let S be a subset of R Prove that $ is compact iff every infinite subset of S has an accumulation point in S'
Added by Brent O.
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To do this, we use the principle of inclusion and exclusion. The principle of inclusion and exclusion states that if a set A contains everything within it, then A is called inclusionary. Conversely, if A does not contain any elements within it, then A is called Show more…
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