Results 21 to 30 of about 5,057 (262)

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

Dense subgraphs induced by edge labels

open access: yes, 2023
Finding densely connected groups of nodes in networks is a widely-used tool for analysis in graph mining. A popular choice for finding such groups is to find subgraphs with a high average degree. While useful, interpreting such subgraphs may be difficult.
Nikolaj Tatti   +3 more
core   +1 more source

Line graphs of directed graphs I [PDF]

open access: yesTransactions on Combinatorics
We determine the forbidden induced subgraphs for the intersection of the classes of chordal bipartite graphs and line graphs of acyclic directed graphs. This is a first step towards finding the forbidden induced subgraphs for the class of line graphs of ...
Vaidyanathan Sivaraman, Daniel Slilaty
doaj   +1 more source

On induced subgraphs of the Hamming graph [PDF]

open access: yesJournal of Graph Theory, 2020
AbstractIn connection with his solution of the Sensitivity Conjecture, Hao Huang (arXiv: 1907.00847, 2019) asked the following question: Given a graph with high symmetry, what can we say about the smallest maximum degree of induced subgraphs of with vertices, where denotes the size of the largest independent set in ?
openaire   +2 more sources

Tulgeity of Line, Middle and Total Graph of Wheel Graph Families [PDF]

open access: yes, 2010
Tulgeity r(G) is the maximum number of disjoint, point induced, non acyclic subgraphs contained in G. In this paper one finds the tulgeity of line, middle and total graph of wheel graph, Gear graph and Helm ...
Vernold, Vivin   +2 more
core   +1 more source

Efficient Algorithms for Subgraph Listing

open access: yesAlgorithms, 2014
Subgraph isomorphism is a fundamental problem in graph theory. In this paper we focus on listing subgraphs isomorphic to a given pattern graph. First, we look at the algorithm due to Chiba and Nishizeki for listing complete subgraphs of fixed size, and ...
Niklas Zechner, Andrzej Lingas
doaj   +1 more source

On subgraphs without large components [PDF]

open access: yesMathematica Bohemica, 2017
We consider, for a positive integer $k$, induced subgraphs in which each component has order at most $k$. Such a subgraph is said to be $k$-divided. We show that finding large induced subgraphs with this property is NP-complete.
Glenn G. Chappell, John Gimbel
doaj   +1 more source

Colorful induced subgraphs

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

Factors and induced subgraphs

open access: yesDiscrete Mathematics, 1988
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yoshimi Egawa   +2 more
openaire   +2 more sources

Induced Subgraph Saturated Graphs

open access: yesTheory and Applications of Graphs, 2016
A graph $G$ is said to be \emph{$H$-saturated} if $G$ contains no subgraph isomorphic to $H$ but the addition of any edge between non-adjacent vertices in $G$ creates one.
Craig Tennenhouse
doaj   +1 more source

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