Results 31 to 40 of about 842,964 (161)

Definability Equals Recognizability for $k$-Outerplanar Graphs [PDF]

open access: yes, 2015
One of the most famous algorithmic meta-theorems states that every graph property that can be defined by a sentence in counting monadic second order logic (CMSOL) can be checked in linear time for graphs of bounded treewidth, which is known as Courcelle ...
Bodlaender, Hans L., Jaffke, Lars
core   +5 more sources

A Polynomial-Time Algorithm for Computing the Maximum Common Connected Edge Subgraph of Outerplanar Graphs of Bounded Degree

open access: yesAlgorithms, 2013
The maximum common connected edge subgraph problem is to find a connected graph with the maximum number of edges that is isomorphic to a subgraph of each of the two input graphs, where it has applications in pattern recognition and chemistry.
Takeyuki Tamura, Tatsuya Akutsu
doaj   +1 more source

Scaling Limits of Random Graphs from Subcritical Classes: Extended abstract [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2015
We study the uniform random graph $\mathsf{C}_n$ with $n$ vertices drawn from a subcritical class of connected graphs. Our main result is that the rescaled graph $\mathsf{C}_n / \sqrt{n}$ converges to the Brownian Continuum Random Tree $\mathcal{T}_ ...
Konstantinos Panagiotou   +2 more
doaj   +1 more source

Aggregative context-aware fitness functions based on feature selection for evolutionary learning of characteristic graph patterns

open access: yesVietnam Journal of Computer Science, 2018
We propose aggregative context-aware fitness functions based on feature selection for evolutionary learning of characteristic graph patterns. The proposed fitness functions estimate the fitness of a set of correlated individuals rather than the sum of ...
Fumiya Tokuhara   +4 more
doaj   +1 more source

Lict edge semientire graph of a planar graph. [PDF]

open access: yes, 2007
In this paper, we introduce the concept of the Lict edge semientire graph of a planar graph. We present characterizations of graphs whose lict edge semientire graphs are planar, outerplanar and Maximal outerplanar, crossing number one.
Maralabhavi, Y.B., Venkanagouda, M.G.
core   +1 more source

A Note on the Fair Domination Number in Outerplanar Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2020
For k ≥ 1, a k-fair dominating set (or just kFD-set), in a graph G is a dominating set S such that |N(v) ∩ S| = k for every vertex v ∈ V − S. The k-fair domination number of G, denoted by fdk(G), is the minimum cardinality of a kFD-set. A fair dominating
Hajian Majid, Rad Nader Jafari
doaj   +1 more source

Star Coloring Outerplanar Bipartite Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2019
A proper coloring of the vertices of a graph is called a star coloring if at least three colors are used on every 4-vertex path. We show that all outerplanar bipartite graphs can be star colored using only five colors and construct the smallest known ...
Ramamurthi Radhika, Sanders Gina
doaj   +1 more source

On edge-intersection graphs of k-bend paths in grids [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2010
Edge-intersection graphs of paths in grids are graphs that can be represented such that vertices are paths in a grid and edges between vertices of the graph exist whenever two grid paths share a grid edge. This type of graphs is motivated by applications
Therese Biedl, Michal Stern
doaj   +1 more source

A Polynomial-time Algorithm for Outerplanar Diameter Improvement

open access: yes, 2014
The Outerplanar Diameter Improvement problem asks, given a graph $G$ and an integer $D$, whether it is possible to add edges to $G$ in a way that the resulting graph is outerplanar and has diameter at most $D$.
Cohen, Nathann   +6 more
core   +3 more sources

On Vertices Enforcing a Hamiltonian Cycle

open access: yesDiscussiones Mathematicae Graph Theory, 2013
A nonempty vertex set X ⊆ V (G) of a hamiltonian graph G is called an H-force set of G if every X-cycle of G (i.e. a cycle of G containing all vertices of X) is hamiltonian.
Fabrici Igor   +2 more
doaj   +1 more source

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