Dense
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Let be a topological space and be a subspace of . Then is dense in if, for any and any open neighborhood , . For example, the rational numbers are dense in the real numbers.
This article is a stub. Help us out by expanding it.
Let be a topological space and be a subspace of . Then is dense in if, for any and any open neighborhood , . For example, the rational numbers are dense in the real numbers.
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