Structure of Open Self-Maps on Topological Spaces That Satisfy a Separation Axiom
DOI:
https://doi.org/10.59743/jbs.v37i2.310Keywords:
Orbit, Open map, Topological space, Separation axiom, 2020 Mathematics Subject Classification code: 54C10Abstract
Let be any set and be a map. In this paper, the following questions are addressed: Can we define a non-discrete topology on with respect to which is an open map? When can we endow with a non-discrete topology such that the map is open and satisfies one of the separation axioms? We answer some of these questions in terms of the orbit structure of the map concerned.
References
A. M. Ahmed, “Continuous Self-maps on T0-Spaces,” Alqala Journal, Elmergib University, Libya, no. 16, pp. 219-222, 2021, https://qlaj.elmergib.edu.ly/index.php/qlaj/issue/archive.
D. Ellis, “Orbital Topologies,” The Quarterly Journal of Mathematics, vol. 4, no. 1, pp. 117–119, 1953, doi: https://doi.org/10.1093/qmath/4.1.117.
C. Good and S. Greenwood, “Continuity in separable metrizable and Lindelöf spaces,” Proceedings of the American Mathematical Society, vol. 138, no. 02, pp. 577–591, Oct. 2009, doi:https://doi.org/10.1090/s0002-9939-09-10149-1.
C. Good, S. Greenwood, R. W. Knight, D. W. McIntyre, and S. Watson, “Characterizing continuous functions on compact spaces,” Advances in Mathematics, vol. 206, no. 2, pp. 695–728, Nov. 2006, doi:https://doi.org/10.1016/j.aim.2005.11.002.
C. Good, S. Greenwood, and N. Uresin, “Abstract topological dynamics involving set-valued functions,” Topology and its Applications, vol. 279, p. 107240, Jul. 2020, doi:https://doi.org/10.1016/j.topol.2020.107240.
J. D. Groot and H. De Vries, “Metrization of a set which is mapped into itself,” The Quarterly Journal of Mathematics, vol. 9, no. 1, pp. 144–148, Jan. 1958, doi:https://doi.org/10.1093/qmath/9.1.144.
A. Iwanik, “How restrictive is topological dynamics?,” Commentationes Mathematicae Universitatis Carolinae, vol. 38, no. 3, pp. 563–569, 1997.
T. Richmond, General Topology: An Introduction. Berlin, Boston: De Gruyter, 2020, doi:https://doi.org/10.1515/9783110686579.
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