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Covering a Graph with Clubs

open access: yesJournal of Graph Algorithms and Applications, 2019
Finding cohesive subgraphs in a network has been investigated in many network mining applications. Several alternative formulations of cohesive subgraph have been proposed, a notable one of them is $s$-club, which is a subgraph whose diameter is at most
Riccardo Dondi   +3 more
doaj   +4 more sources

On some covering graphs of a graph [PDF]

open access: yesElectronic Journal of Graph Theory and Applications, 2016
For a graph $G$ with vertex set $V(G)=\{v_1, v_2, \dots, v_n\}$, let $S$ be the covering set of $G$ having the maximum degree over all the minimum covering sets of $G$.
Shariefuddin Pirzada   +2 more
doaj   +5 more sources

Soft document clustering using a novel graph covering approach [PDF]

open access: yesBioData Mining, 2018
Background In text mining, document clustering describes the efforts to assign unstructured documents to clusters, which in turn usually refer to topics. Clustering is widely used in science for data retrieval and organisation.
Jens Dörpinghaus   +2 more
doaj   +2 more sources

Odd covers of graphs

open access: yesJournal of Graph Theory, 2023
AbstractGiven a finite simple graph , an odd cover of is a collection of complete bipartite graphs, or bicliques, in which each edge of appears in an odd number of bicliques, and each nonedge of appears in an even number of bicliques. We denote the minimum cardinality of an odd cover of by and prove that is bounded below by half of the rank over
Calum Buchanan   +6 more
openaire   +2 more sources

New Concepts of Vertex Covering in Cubic Graphs with Its Applications

open access: yesMathematics, 2022
Graphs serve as one of the main tools for the mathematical modeling of various human problems. Fuzzy graphs have the ability to solve uncertain and ambiguous problems.
Huiqin Jiang   +4 more
doaj   +1 more source

The topological ordering of covering nodes [PDF]

open access: yesCommunications in Combinatorics and Optimization, 2020
The topological ordering algorithm sorts nodes of a directed graph such that the order of the tail of each arc is lower than the order of its head. In this paper, we introduce the notion of covering between nodes of a directed graph. Then, we apply the
G.H. Shirdel, N. Kahkeshani
doaj   +1 more source

Ramanujan coverings of graphs [PDF]

open access: yesProceedings of the forty-eighth annual ACM symposium on Theory of Computing, 2016
38 pages, 4 figures, journal version. Shortened version appeared in STOC 2016.
Chris Hall   +2 more
openaire   +2 more sources

On the Edge Covering Transversal Edge Domination in Graphs

open access: yesRatio Mathematica, 2023
Let G = (V,E) be any graph with nvertices and medges. An edge dominating set which intersects every minimum edge covering set in a graph Gis called an edge covering transversal edge dominating set of G.
E Sherin Danie, S Robinson Chellathurai
doaj   +1 more source

On Edge H-Irregularity Strengths of Some Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2021
For a graph G an edge-covering of G is a family of subgraphs H1, H2, . . . , Ht such that each edge of E(G) belongs to at least one of the subgraphs Hi, i = 1, 2, . . . , t. In this case we say that G admits an (H1, H2, . . . , Ht)-(edge) covering.
Naeem Muhammad   +4 more
doaj   +1 more source

On covers of graphs

open access: yesDiscrete Mathematics, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jana Maxová, Jaroslav Nesetril
openaire   +1 more source

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