DeepAI

# Decremental Optimization of Dominating Sets Under Reachability Constraints

Given a dominating set, how much smaller a dominating set can we find through elementary operations? Here, we proceed by iterative vertex addition and removal while maintaining the property that the set forms a dominating set of bounded size. This can be seen as the optimization variant of the dominating set reconfiguration problem, where two dominating sets are given and the question is merely whether they can be reached one from another through elementary operations. We show that this problem is PSPACE-complete, even if the input graph is a bipartite graph, a split graph, or has bounded pathwidth. On the positive side, we give linear-time algorithms for cographs, trees and interval graphs. We also study the parameterized complexity of this problem. More precisely, we show that the problem is W[2]-hard when parameterized by the upper bound on the size of an intermediary dominating set. On the other hand, we give fixed-parameter algorithms with respect to the minimum size of a vertex cover, or d+s where d is the degeneracy and s is the upper bound of output solution.

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• 11 publications
11/30/2020

### Parameterized algorithms for locating-dominating sets

A locating-dominating set D of a graph G is a dominating set of G where ...
02/12/2020

### Algorithmic Complexity of Isolate Secure Domination in Graphs

A dominating set S is an Isolate Dominating Set (IDS) if the induced sub...
01/31/2020

### Algorithmic Aspects of Some Variants of Domination in Graphs

A set S ⊆ V is a dominating set in G if for every u ∈ V ∖ S, there exist...
11/07/2022

### Polynomial Kernels for Generalized Domination Problems

In this paper, we study the parameterized complexity of a generalized do...
05/13/2022

### Improved Upper Bound on Independent Domination Number for Hypercubes

We revisit the problem of determining the independent domination number ...
12/07/2022

### Generalized Lorenz dominance orders

We extend the discrete majorization theory by working with non-normalize...
02/14/2023

### Grouped Domination Parameterized by Vertex Cover, Twin Cover, and Beyond

A dominating set S of graph G is called an r-grouped dominating set if S...