Galois connections between sets of paths and closure operators in simple graphs

For every positive integer n,we introduce and discuss an isotone Galois connection between the sets of paths of lengths n in a simple graph and the closure operators on the (vertex set of the) graph. We consider certain sets of paths in a particular graph on the digital line Z and study the closure...

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Bibliographic Details
Main Author: Šlapal Josef
Format: Article
Language:English
Published: De Gruyter 2018-12-01
Series:Open Mathematics
Subjects:
Online Access:https://doi.org/10.1515/math-2018-0128
Description
Summary:For every positive integer n,we introduce and discuss an isotone Galois connection between the sets of paths of lengths n in a simple graph and the closure operators on the (vertex set of the) graph. We consider certain sets of paths in a particular graph on the digital line Z and study the closure operators associated, in the Galois connection discussed, with these sets of paths. We also focus on the closure operators on the digital plane Z2 associated with a special product of the sets of paths considered and show that these closure operators may be used as background structures on the plane for the study of digital images.
ISSN:2391-5455