CLOSURE OPERATORS ASSOCIATED WITH RELATIONS

Authors

  • Josef ˇSlapal Brno University of Technology

Keywords:

Closure operator, ordinal (number), relation, path, connectedness, Khalimsky topology

Abstract

We study closure operators that are associated with $\alpha$-ary relations where $\alpha>1$ is an ordinal. In particular, we show that the connectedness with respect to the closure operators is a certain kind of path-wise connectedness. We demonstrate a possible application of our results in digital topology.

References

E. Cech, Topological spaces, in: Topological Papers of Eduard Cech, Academia, Prague, 1968, ch. 28, 436-472.

E. Cech, Topological Spaces (revised by Z. Frolík and M. Katētov), Academia, Prague, 1966.

E. Giuli and J. S̄lapal, Neighborhoods with respect to a categorical closure operator, Acta Math. Hungar. 124 (2009), 1-14.

G. Grätzer, General Lattice Theory, Birkhäuser Verlag, Basel, 1978.

E.D. Khalimsky, R. Kopperman and P.R. Meyer, Computer graphics and connected topologies on finite ordered sets, Topology Appl. 36 (1990), 1-17.

T.Y. Kong, R. Kopperman and P.R. Meyer, A topological approach to digital topology, Amer. Math. Monthly 98 (1991), 902-917.

G. Preuß, Allgemeine Topologie, 2nd ed., Springer-Verlag, Berlin, 1975.

A. Rosenfeld, Connectivity in digital pictures, J. Assoc. Comput. Mach. 17 (1970), 146-160.

J. S̄lapal, Relations and topologies, Czech. Math. J. 43 (1993), 141-150.

J. S̄lapal, A closure operator for the digital plane, Filomat 34 (2020), 3229-3237.

M.B. Smyth, Semi-metrics, closure spaces and digital topology, Theoretical Computer Science 151 (1995), 257-276.

Published

2022-05-18

How to Cite

ˇSlapal, J. (2022). CLOSURE OPERATORS ASSOCIATED WITH RELATIONS. Topology Proceedings, 61, 203–213. Retrieved from https://topology.journals.yorku.ca/index.php/tp/article/view/84

Issue

Section

Unsorted