I am currently taking a number theory course. The professor who teaches the course is very well known in his research field which is Ergodic Theory.(adsbygoogle = window.adsbygoogle || []).push({});

I find that he really likes to assign problems that deal with the density of a certain set. Sometimes the problems would be about proving whether the density of a certain set exists or not. Other times it would be proving whether the upper density of a given set is what he claims it is. Are there any general ways to tackling these kinds of problems?

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# Density Problems

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