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Answer to Question #217082 in Differential Geometry | Topology for Prathibha Rose

Question #217082

Determine the boundary of the set Q of all the rational numbers in the real.line R


1
Expert's answer
2021-07-28T13:44:06-0400

The boundary of the set Q of rational numbers is the real line R because the ϵ-neighbourhood of every point in R contains both rational and irrationalnumbers.


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