English

On a locally compact monoid of cofinite partial isometries of $\mathbb{N}$ with adjoined zero

Group Theory 2023-06-05 v3 General Topology

Abstract

Let CN\mathscr{C}_\mathbb{N} be a monoid which is generated by the partial shift α ⁣:nn+1\alpha\colon n\mapsto n+1 of the set of positive integers N\mathbb{N} and its inverse partial shift β ⁣:n+1n\beta\colon n+1\mapsto n. In this paper we prove that if SS is a submonoid of the monoid IN\mathbf{I}\mathbb{N}_{\infty} of all partial cofinite isometries of positive integers which contains CN\mathscr{C}_\mathbb{N} as a submonoid then every Hausdorff locally compact shift-continuous topology on SS with adjoined zero is either compact or discrete. Also we show that the similar statement holds for a locally compact semitopological semigroup SS with an adjoined compact ideal.

Keywords

Cite

@article{arxiv.2112.15000,
  title  = {On a locally compact monoid of cofinite partial isometries of $\mathbb{N}$ with adjoined zero},
  author = {Oleg Gutik and Pavlo Khylynskyi},
  journal= {arXiv preprint arXiv:2112.15000},
  year   = {2023}
}

Comments

15 pages. arXiv admin note: text overlap with arXiv:2104.14149, arXiv:2008.03159