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Quick! [0, infty) open or closed interval?
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Quick! [0, infty) open or closed interval?
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Oct 11, 2017
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Quick! [0, infty) open or closed interval?
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Armin Rigo
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Infinite intervals are closed if they contain a finite endpoint, and open otherwise. The entire real line is an infinite interval that is both open and closed
Mohabbati
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Oct 17, 2017
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