Results 31 to 40 of about 6,576,413 (265)

Colorful induced subgraphs

open access: yesDiscrete Mathematics, 1992
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kierstead, H.A., Trotter, W.T.
openaire   +2 more sources

Graphs containing finite induced paths of unbounded length [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2022
The age $\mathcal{A}(G)$ of a graph $G$ (undirected and without loops) is the collection of finite induced subgraphs of $G$, considered up to isomorphy and ordered by embeddability. It is well-quasi-ordered (wqo) for this order if it contains no infinite
Maurice Pouzet, Imed Zaguia
doaj   +1 more source

On Triangle‐Free Graphs That Do Not Contain a Subdivision of the Complete Graph on Four Vertices as an Induced Subgraph [PDF]

open access: yesJournal of Graph Theory, 2014
We prove a decomposition theorem for the class of triangle‐free graphs that do not contain a subdivision of the complete graph on four vertices as an induced subgraph. We prove that every graph of girth at least five in this class is 3‐colorable.
Nicolas Trotignon, Kristina Vuskovic
semanticscholar   +1 more source

Reconfiguration of Regular Induced Subgraphs

open access: yes, 2022
We study the problem of checking the existence of a step-by-step transformation of $d$-regular induced subgraphs in a graph, where $d \ge 0$ and each step in the transformation must follow a fixed reconfiguration rule. Our problem for $d=0$ is equivalent to \textsc{Independent Set Reconfiguration}, which is one of the most well-studied reconfiguration ...
Hiroshi Eto   +4 more
openaire   +2 more sources

Forbidden Induced Subgraphs

open access: yesElectronic Notes in Discrete Mathematics, 2017
In descending generality I survey: five partial orderings of graphs, the induced-subgraph ordering, and examples like perfect, threshold, and mock threshold graphs. The emphasis is on how the induced subgraph ordering differs from other popular orderings and leads to different basic questions.
openaire   +4 more sources

The line completion number of hypercubes

open access: yesAKCE International Journal of Graphs and Combinatorics, 2019
In 1992, Bagga, Beineke, and Varma introduced the concept of the super line graph of index of a graph denoted by The vertices of are the -subsets of and two vertices and are adjacent if there exist and such that and are adjacent edges in They also ...
S.A. Tapadia, B.N. Waphare
doaj   +1 more source

CONSTRUCTION OF BICYCLIC GRAPH AND ITS APPLICATION IN TRANS JOGJA ROUTES

open access: yesBarekeng, 2023
A bicyclic graph is a type of graph that consists of exactly two cycles. A cycle is a graph that is a closed path where no vertices are repeated except the first and last vertices which are the same.
Aditya Ambarwati, Vira Hari Krisnawati
doaj   +1 more source

A ramsey-type theorem for multiple disjoint copies of induced subgraphs

open access: yesDiscussiones Mathematicae Graph Theory, 2014
Let k and ℓ be positive integers with ℓ ≤ k − 2. It is proved that there exists a positive integer c depending on k and ℓ such that every graph of order (2k−1−ℓ/k)n+c contains n vertex disjoint induced subgraphs, where these subgraphs are isomorphic to ...
Nakamigawa Tomoki
doaj   +1 more source

The complete list of Ramsey $(2K_2,K_4)$-minimal graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2015
Let $F, G,$ and $H$ be non-empty graphs. The notation $F \rightarrow (G,H)$ means that if all edges of $F$ are arbitrarily colored by red or blue, then either the subgraph of $F$ induced by all red edges contains a graph $G$ or the subgraph of $F ...
Kristiana Wijaya   +3 more
doaj   +1 more source

Induced Subgraphs and Path Decompositions

open access: yesThe Electronic Journal of Combinatorics, 2023
A graph $H$ is an induced subgraph of a graph $G$ if a graph isomorphic to $H$ can be obtained from $G$ by deleting vertices. Recently, there has been significant interest in understanding the unavoidable induced subgraphs for graphs of large treewidth.
openaire   +2 more sources

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