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On 20.10.2024 23:54, Richard Damon wrote:What's the preimage?half of an infinite set can be the same size as the whole,>
That is nonsense but it is not the point.
The point is this: When doubling numbers, their distance increases in positive direction, hence larger numbers are in the image than in the range.
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If the range was complete, the image shows that the range was not complete.
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