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October 26th, 2017, 01:34 AM   #1
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Compact set

This is my first time i ll ask a question here . And i still dk how to use this website very well , anyway how can we prove that the sphere is a comapact set ?
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October 26th, 2017, 04:15 AM   #2
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It's a closed and bounded subset of Euclidean space.

https://en.wikipedia.org/wiki/Heine%...3Borel_theorem
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