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Let a and b be rational numbers and a < b. Show that the class of closed intervals [a, b] is not a base for a topology on the real line.
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Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.
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Let a and b be rational numbers and a < b. Show that the class of closed intervals [a, b] is not...
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