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An optimal algorithm for computing minimum \(k\)-hop dominating set of permutation graphs

Abstract

A  \(k\)-hop dominating set (\(k\)-HDS) \(D\) of a graph \(G = (V,E)\) is a subset of \(V\) such that every vertex \(x\in V\) is within \(k\)-steps from at least one vertex \(y\in D\), i.e., \(d(x,y)\leq k\), where \(k\) is a fixed positive integer. A \(k\)-hop dominating set \(D\) is said to be minimal if there does not exist any \(H\subset D\) such that \(H\) is a \(k\)-HDS of \(G\). If a dominating set \(D\) is minimal as well as it is \(k\)-HDS then it is said to be minimum \(k\)-hop dominating set. In this paper, we present an optimal algorithm to compute a minimum \(k\)-HDS of permutation graphs with \(n\) vertices which runs in \(O(n)\) time.

2020 Mathematics Subject Classification:

05C30, 05C12, 68R10, 68Q25

Keywords

Design and analysis of algorithms, \(k\)-hop domination, permutation graphs

Full text

Author Details

Sambhu Charan Barman

Department of Mathematics
Shahid Matangini Hazra Govt. College for Women
Nimtouri, Purba Medinipur
721649 West Bengal, India
e-mail: barman.sambhu@gmail.com

Madhumangal Pal

Department of Applied Mathematics
with Oceanology and Computer Programming
Vidyasagar University
721102 Midnapore, India
e-mail: mmpalvu@gmail.com

Sukumar Mondal

Department Of Mathematics
Raja N. L. Khan Women’s College
Gope Palace
721102 Midnapore, India
e-mail: sm5971@rediffmail.com


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