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YouTubeMarius Furter
Topology Lecture 02: Closed Sets & Closure
We define closed sets and give some examples. Then we learn about the closure, interior, exterior, and boundary of sets. We conclude by proving several characterizations for these objects. 00:00 Introduction 00:21 Review 02:04 Definition: Closed Set 04:27 Consequences of the Definition 09:49 Example: Closed Interval 10:36 Example: Closed Ball ...
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