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arXiv 2106.14435math.CO
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沿滤子的中心集定理及其组合推论

Central Sets Theorem along filters and some combinatorial consequences

Sayan Goswami, Jyotirmoy Poddar

摘要:

中心集定理是由H. Furstenberg和后来的几位数学家提供了这个定理的各种版本和扩展。所有这些定理都是关于中心集的,并且它的起源是任意半群的Stone-Cech紧化代数,比如$βS$。证明了$βS$的每个闭子半群都是由滤子生成的。我们将证明,在一定的限制下,我们可以导出$βS$的任何闭子半群的中心集定理。我们将使用相应的滤子及其代数来推导这个定理。稍后,我们也将处理如何沿过滤器的概念,保持在一些良好的行为同态,并给出一些后果。

英文摘要:

The Central Sets Theorem was introduced by H. Furstenberg and then afterwards several mathematicians have provided various versions and extensions of this theorem. All of these theorems deal with central sets, and its origin from the algebra of Stone-Cech compactification of arbitrary semigroup, say $βS$. It can be proved that every closed subsemigroup of $βS$ is generated by a filter. We will show that, under some restrictions, one can derive the Central Sets Theorem for any closed subsemigroup of $βS$ . We will derive this theorem using the corresponding filter and its algebra. Later we will also deal with how the notions of largeness along filters are preserved under some well behaved homomorphisms and give some consequences.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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