Results 101 to 110 of about 566 (185)

Characterization and recognition of edge intersection graphs of trichromatic hypergraphs with finite multiplicity in the class of split graphs

open access: yesInformatika, 2018
A hypergraph is called k-chromatic if its vertex set can be partitioned into at most k pairwise disjoint subsets when each subset has no more than two common vertices with every edge of the hypergraph.
T. V. Lubasheva
doaj  

Relative timing information and orthology in evolutionary scenarios. [PDF]

open access: yesAlgorithms Mol Biol, 2023
Schaller D   +5 more
europepmc   +1 more source

Enumerating All Subgraphs without Forbidden Induced Subgraphs via Multivalued Decision Diagrams

open access: yesCoRR, 2018
We propose a general method performed over multivalued decision diagrams that enumerates all subgraphs of an input graph that are characterized by input forbidden induced subgraphs. Our method combines elaborations of classical set operations and the developing construction technique, called the frontier based search, for multivalued decision diagrams.
Jun Kawahara   +3 more
openaire   +2 more sources

Local certification of forbidden subgraphs

open access: yes
Detecting specific structures in a network has been a very active theme of research in distributed computing for at least a decade. In this paper, we start the study of subgraph detection from the perspective of local certification. Remember that a local
Zeitoun, Sébastien   +4 more
core   +4 more sources

On 3-Coloring of ( 2 P 4 , C 5 )-Free Graphs. [PDF]

open access: yesAlgorithmica, 2022
Jelínek V   +4 more
europepmc   +1 more source

Forbidden subgraph colorings and the oriented chromatic number

open access: yes, 2009
. We present an improved upper bound of O(d1+ 1 m−1) for the (2,F)-subgraph chromatic number χ2,F (G) of any graph G of maximum degree d. Here, m denotes the minimum number of edges in any member of F.
N. R. Aravind, C. R. Subramanian
core   +1 more source

Long induced paths in sparse graphs and graphs with forbidden patterns

open access: yes
26 pages, 8 figures. Comments welcome !Consider a graph $G$ with a path $P$ of order $n$. What conditions force $G$ to also have a long induced path?
Raymond, Jean-Florent   +2 more
core   +2 more sources

A structure theorem for graphs with no cycle with a unique chord and its consequences [PDF]

open access: yes
We give a structural description of the class C of graphs that do not contain a cycle with a unique chord as an induced subgraph. Our main theorem states that any connected graph in C is a either in some simple basic class or has a decomposition.
Nicolas Trotignon, Kristina Vuskovic
core  

Clustering systems of phylogenetic networks. [PDF]

open access: yesTheory Biosci, 2023
Hellmuth M, Schaller D, Stadler PF.
europepmc   +1 more source

Pairs of forbidden class of subgraphs concerning $K_{1,3}$ and P₆ to have a cycle containing specified vertices

open access: yes, 2009
In [3], Faudree and Gould showed that if a 2-connected graph contains no $K_{1,3}$ and P₆ as an induced subgraph, then the graph is hamiltonian. In this paper, we consider the extension of this result to cycles passing through specified vertices.
Tsugaki, Masao, Sugiyama, Takeshi
core   +1 more source

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