Results 31 to 40 of about 5,057 (262)

Polyhedral properties of the induced cluster subgraphs [PDF]

open access: yesDiscrete Applied Mathematics, 2021
A cluster graph is a graph whose every connected component is a complete graph. Given a simple undirected graph $G$, a subset of vertices inducing a cluster graph is called an independent union of cliques (IUC), and the IUC polytope associated with $G$ is defined as the convex hull of the incidence vectors of all IUCs in the graph. The {\sc Maximum IUC}
Seyedmohammadhossein Hosseinian   +1 more
openaire   +3 more sources

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

Induced Subgraphs of the Power of a Cycle [PDF]

open access: yesSIAM Journal on Discrete Mathematics, 1989
In this article, it is shown that if G is an induced subgraph of the dth power of a cycle of length n, and G has minimum degree $d + k$, then G has at least $[ (d + k)/2d ]n$ vertices. This answers a problem of Kezdy.
Jean-Claude Bermond, Claudine Peyrat
openaire   +2 more sources

On induced subgraphs of the cube

open access: yesJournal of Combinatorial Theory, Series A, 1988
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fan R. K. Chung   +3 more
openaire   +2 more sources

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

Directed Neutrosophic Graph using Morphological Operators and Its Applications [PDF]

open access: yesNeutrosophic Sets and Systems
Connectedness provides well suited solutions for several application problems. In Graph theory, graph is connected when there exist a path between any two arbitrary vertices.
Abraham Jacob   +2 more
doaj   +1 more source

Partitioning graphs into induced subgraphs [PDF]

open access: yesDiscrete Applied Mathematics, 2017
14 pages, 4 ...
openaire   +2 more sources

Extending the MAX Algorithm for Maximum Independent Set

open access: yesDiscussiones Mathematicae Graph Theory, 2015
The maximum independent set problem is an NP-hard problem. In this paper, we consider Algorithm MAX, which is a polynomial time algorithm for finding a maximal independent set in a graph G.
Lê Ngoc C.   +2 more
doaj   +1 more source

Induced subgraphs with distinct sizes [PDF]

open access: yesRandom Structures & Algorithms, 2008
AbstractWe show that for every 0 < ϵ < 1/2, there is an n0 = n0(ϵ) such that if n > n0 then every n‐vertex graph G of size at least $\varepsilon \left( {\matrix{ {\matrix{ n \cr 2 \cr } } \cr } } \right)$ and at most $(1- \varepsilon) \left( {\matrix{ {\matrix{ n \cr 2 \cr } } \cr } } \right)$ contains induced k‐vertex subgraphs with at least ...
Noga Alon, Alexandr V. Kostochka
openaire   +1 more source

NetMODE: network motif detection without Nauty. [PDF]

open access: yesPLoS ONE, 2012
A motif in a network is a connected graph that occurs significantly more frequently as an induced subgraph than would be expected in a similar randomized network.
Xin Li   +5 more
doaj   +1 more source

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