On Semitopological Bicyclic Extensions of Linearly Ordered Groups
- Authors: Gutik O.V.1, Maksymyk K.M.1
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Affiliations:
- I. Franko Lviv National University
- Issue: Vol 238, No 1 (2019)
- Pages: 32-45
- Section: Article
- URL: https://journals.rcsi.science/1072-3374/article/view/242476
- DOI: https://doi.org/10.1007/s10958-019-04216-x
- ID: 242476
Cite item
Abstract
For a linearly ordered group G , we define a subset A ⊆ G to be a shift-set if, for any x, y, z ϵ A with y < x, we get x · y-1 ··z ϵ A. We describe the natural partial order and solutions of equations on the semigroup B(A) of shifts of positive cones of A . We study topologizations of the semigroup B(A). In particular, we show that, for an arbitrary countable linearly ordered group G and a nonempty shift-set A of G , every Baire shift-continuous T1-topology τ on B(A) is discrete. We also prove that, for any linearly nondensely ordered group G and a nonempty shift-set A of G , every shift-continuous Hausdorff topology τ on the semigroup B (A) is discrete.
About the authors
O. V. Gutik
I. Franko Lviv National University
Email: Jade.Santos@springer.com
Ukraine, Lviv
K. M. Maksymyk
I. Franko Lviv National University
Email: Jade.Santos@springer.com
Ukraine, Lviv