Dedekind section. What is the meaning of it?

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Homemade2020-12-25 17:05:57

Mathematics

Homemade, 2020-12-25 17:05:57

I started to solve Demidovich, and there this is. Absolutely no idea what it means.
+ If I skip this topic, will there be any problems in the further study of mathematical analysis?

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Mercury13, 2020-12-25
@Homemade

One of the ways to get real numbers from rational numbers.
There will be no problems.
However, these suprema and infima would be worth tormenting.

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