Van Der Waerden's Theorem: Exposition and Generalizations
نویسنده
چکیده
as a, a + p1(d), a + p2(d), . . . , a + pk−1(d) where pi(d) = id. Why these functions? We ponder replacing pi with other functions. The following remarkable theorem was first proved by Bergelson and Leibman [1]. They proved it by first proving the polynomial version of the Hales-Jewitt Theorem [2] (see Section 4 for a statement and proof of the original Hales-Jewitt Theorem), from which Theorem 1.8 follows easily. Their proof of the polynomial version of the Hales-Jewitt Theorem used ergodic methods. A later proof by Walters [7] uses combinatorial techniques. Hence, putting all of this together, there is a combinatorial proof of Theorem 1.8. The purpose of this note is to put all of this together in a self-contained way.
منابع مشابه
A Pearl of Number Theory on the Shore of Combinatorics
We shall discuss some history, state several generalizations and mention few applications of the theorem. As we shall see, the theorem of Hales and Jewett, revealing the combinatorial nature of van der Waerden's theorem would claim that this ‘pearl of number theory’ belonged to the ancient shore of Combinatorics. Yet, there remains very difficult unsolved problems arising out of this theme and ...
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تاریخ انتشار 2007