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[itex]\bigcup[0,x][/itex] where [itex]0\leq x<1[/itex]. Then, [itex]\bigcup[0,x] = [0,1)[/itex], right?

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- #1

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[itex]\bigcup[0,x][/itex] where [itex]0\leq x<1[/itex]. Then, [itex]\bigcup[0,x] = [0,1)[/itex], right?

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HallsofIvy

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- #3

Bacle2

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Or, you can apply DeMorgan to an intersection of opens that is not open, like (0,1/n).

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