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Edge erasures and chordal graphs [PDF]

open access: yesElectronic Journal of Graph Theory and Applications, 2021
We prove several results about chordal graphs and weighted chordal graphs by focusing on exposed edges. These are edges that are properly contained in a single maximal complete subgraph.
Jared Culbertson   +2 more
doaj   +3 more sources

Connected graph searching in chordal graphs

open access: yesDiscrete Applied Mathematics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Nicolas Nisse
semanticscholar   +2 more sources

Graph isomorphism completeness for chordal bipartite graphs and strongly chordal graphs

open access: yesDiscrete Applied Mathematics, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ryuhei Uehara   +2 more
semanticscholar   +2 more sources

The Neighborhood Polynomial of Chordal Graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2022
We study the neighborhood polynomial and the complexity of its computation for chordal graphs. The neighborhood polynomial of a graph is the generating function of subsets of its vertices that have a common neighbor.
Helena Bergold   +2 more
doaj   +1 more source

Properties and Recognition of Atom Graphs

open access: yesAlgorithms, 2022
The atom graph of a connected graph is a graph whose vertices are the atoms obtained by clique minimal separator decomposition of this graph, and whose edges are the edges of all its atom trees.
Geneviève Simonet, Anne Berry
doaj   +1 more source

Axiomatic characterizations of Ptolemaic and chordal graphs [PDF]

open access: yesOpuscula Mathematica, 2023
The interval function and the induced path function are two well studied class of set functions of a connected graph having interesting properties and applications to convexity, metric graph theory. Both these functions can be framed as special instances
Manoj Changat   +2 more
doaj   +1 more source

Further results on Hendry's Conjecture [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2022
Recently, a conjecture due to Hendry was disproved which stated that every Hamiltonian chordal graph is cycle extendible. Here we further explore the conjecture, showing that it fails to hold even when a number of extra conditions are imposed.
Manuel Lafond   +2 more
doaj   +1 more source

Reconfiguration Graph for Vertex Colourings of Weakly Chordal Graphs [PDF]

open access: yesDiscrete Mathematics, 2019
The reconfiguration graph $R_k(G)$ of the $k$-colourings of a graph $G$ contains as its vertex set the $k$-colourings of $G$ and two colourings are joined by an edge if they differ in colour on just one vertex of $G$.
Carl Feghali, J. Fiala
semanticscholar   +1 more source

A Short Proof of the Size of Edge-Extremal Chordal Graphs

open access: yesJournal of Mathematical Sciences and Modelling, 2022
[3] have recently determined the maximum number of edges of a chordal graph with a maximum degree less than $d$ and the matching number at most $\nu$ by exhibiting a family of chordal graphs achieving this bound. We provide simple proof of their result.
Mordechai Shalom
doaj   +1 more source

Branchwidth of chordal graphs [PDF]

open access: yesDiscrete Applied Mathematics, 2009
This paper revisits the ‘branchwidth territories' of Kloks, Kratochvíl and Müller [T. Kloks, J. Kratochvíl, H. Müller, New branchwidth territories, in: 16th Ann. Symp. on Theoretical Aspect of Computer Science, STACS, in: Lecture Notes in Computer Science, vol. 1563, 1999, pp.
Paul, Christophe, Telle, Jan Arne
openaire   +1 more source

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