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gottfried
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Homework Statement
If S is a subspace of the metric space X prove (intxA)[itex]\cap[/itex]S[itex]\subset[/itex]ints(A[itex]\cap[/itex]S) where A is an element of ΩX(Open subsets of X)
The Attempt at a Solution
So intxA=[itex]\bigcup[/itex]Bd(a,r) where d is the metric on X and the a's are elements of A
and I think
intsA=[itex]\bigcup[/itex]Bd(a,r)[itex]\cap[/itex]S
But I'm not sure how to use this fact but it feels as though the answer comes some how from the above condition.
Any pointers?
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