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My coauthor George Costakis and I have recently uploaded to arxiv our paper “Szemerédi’s theorem, frequent hypercyclicity and multiple recurrence”. As I’m invited to talk about this subject next month, I will try to give here a general overview of … Continue reading
1. The set of squares does not contain arbitrarily long arithmetic progressions. As we have mentioned in the beginning of this discussion, Rudin was originally interested (among other things) in the number of terms the set of squares has in … Continue reading
This is the second post on Rudin’s conjecture. For the first introductory notes see here. In this post I will try to build some more intuition on sets by studying some examples and discussing their properties. We will also discuss … Continue reading
1. Introduction. This is the first of a series of posts concerning the RudinHardyLittlewood Conjecture. To give a taste of the problem right away let us consider to be a trigonometric polynomial of the form where for . The main … Continue reading