Section 18. Continuous Functions
Jun 11, 2016 · 18. Continuous Functions 3 Example 3. Let R have the standard topology and R` have the lower limit topol-ogy. Let f : R → R` be the identity function f(x) = x (which is of course continuous when mapping R → R). Then f is not continuous here since for a < b, [a,b) is open in R` for f−1([a,b)) = [a,b) is not open in R. Note.
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