Results 101 to 110 of about 161 (144)

Improved Outerplanarity Bounds for Planar Graphs

open access: yes
In this paper, we study the outerplanarity of planar graphs, i.e., the number of times that we must (in a planar embedding that we can initially freely choose) remove the outerface vertices until the graph is empty. It is well-known that there are $n$-vertex graphs with outerplanarity $\tfrac{n}{6}+Θ(1)$, and not difficult to show that the ...
Biedl, Therese, Mondal, Debajyoti
openaire   +2 more sources

Light graphs in families of outerplanar graphs

open access: yesDiscrete Mathematics, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

FOG: Finding outerplanar graphs

open access: yes, 2006
In this demo we will present FOG, a system that mines frequent outerplanar graphs. We argue that outerplanar graphs are an interesting class as they can be mined efficiently and are practically relevant for chemical applications. Our system provides several features that allow a user to ask detailed mining questions and visualize the fragments found.
Ramon, Jan   +3 more
openaire   +1 more source

Reconstruction of maximal outerplanar graphs

open access: yesDiscrete Mathematics, 1972
AbstractS. Ulam has conjectured that every graph with three or more points is uniquely determined by its collection of point-deleted subgraphs. This has been proved for various classes of graphs, but progress has generally been confined to very symmetrical graphs and graphs with connectivity zero or one.
openaire   +2 more sources

A note on compact and compact circular edge-colorings of graphs

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2008
In the paper we study two variants of edge-coloring of edge-weighted graphs, namely compact edge-coloring and circular compact edge-coloring. First, we discuss relations between these two coloring models.
Dariusz Dereniowski, Adam Nadolski
doaj  

Matching Complexes of Outerplanar Graphs

open access: yes
An outerplanar graph is a planar graph that has a planar drawing with all vertices on the unbounded face. The matching complex of a graph is the simplicial complex whose faces are subsets of disjoint edges of the graph. In this paper we prove that the matching complexes of outerplanar graphs are contractible or homotopy equivalent to a wedge of spheres.
Bayer, Margaret   +2 more
openaire   +2 more sources

Network Pollution Games. [PDF]

open access: yesAlgorithmica, 2019
Anastasiadis E   +5 more
europepmc   +1 more source

Are RNA networks scale-free? [PDF]

open access: yesJ Math Biol, 2020
Clote P.
europepmc   +1 more source

Network design for bypass roads using interval valued fuzzy outerplanar graphs. [PDF]

open access: yesSci Rep
Jaisankar D   +3 more
europepmc   +1 more source

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