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Infinite monochromatic patterns in the integers
Journal of Combinatorial Theory Series A ( IF 1.1 ) Pub Date : 2022-03-03 , DOI: 10.1016/j.jcta.2022.105610
Mauro Di Nasso 1
Affiliation  

We show the existence of several infinite monochromatic patterns in the integers obtained as values of suitable symmetric polynomials; in particular, we obtain extensions of both the additive and multiplicative versions of Hindman's theorem. These configurations are obtained by means of suitable symmetric polynomials that mix the two operations. The simplest example is the following. For every finite coloring N=C1Cr there exists an infinite increasing sequence a<b<c< such that all elements below are monochromatic:a,b,c,,a+b+ab,a+c+ac,b+c+bc,,a+b+c+ab+ac+bc+abc,. The proofs use tools from algebra in the space of ultrafilters βZ.



中文翻译:

整数中的无限单色图案

我们展示了作为合适对称多项式的值获得的整数中存在几个无限单色模式;特别是,我们获得了 Hindman 定理的加法和乘法版本的扩展。这些配置是通过混合这两种操作的合适的对称多项式来获得的。最简单的例子如下。对于每一个有限的着色ñ=C1Cr存在一个无限递增的序列一种<b<C<使得以下所有元素都是单色的:一种,b,C,,一种+b+一种b,一种+C+一种C,b+C+bC,,一种+b+C+一种b+一种C+bC+一种bC,.证明使用超滤器空间中的代数工具βZ.

更新日期:2022-03-03
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