2021/06/28 by Sayan Goswami, Goswami, Sayan, Jyotirmoy Poddar +1
Computer Science · Mathematics · #Advanced Topology and Set Theory #Mathematical Dynamics and Fractals #math.CO #semigroups and automata theory
paper · pdf · doi:10.48550/arxiv.2106.14435
arxiv created 2021/10/12 · arxiv updated 2021/10/13
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.