Results 101 to 110 of about 3,997 (179)

On Large Induced Outerplanar Subgraphs in $2$-Outerplanar Graphs

open access: yes
Borradaile, Le and Sherman-Bennett [Graphs and Combinatorics, 2017] proved that every $n$-vertex $2$-outerplane graph has a set of at least $2n/3$ vertices that induces an outerplane graph. We identify a major flaw in their proof and recover their result with a different, and unfortunately much more complex, proof.
D'Elia, Marco, Frati, Fabrizio
openaire   +2 more sources

On the k-Structure Ratio in Planar and Outerplanar Graphs

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2008
A planar k-restricted structure is a simple graph whose blocks are planar and each has at most k vertices. Planar k-restricted structures are used by approximation algorithms for Maximum Weight Planar Subgraph, which motivates this work. The planar k-
Gruia Calinescu, Cristina G. Fernandes
doaj  

Non-Preemptive Tree Packing. [PDF]

open access: yesAlgorithmica, 2023
Lendl S, Woeginger G, Wulf L.
europepmc   +1 more source

On Colorings of Squares of Outerplanar Graphs

open access: yes, 2007
24 pages, 17 ...
Geir Agnarsson, Magnús M. Halldórsson
openaire   +3 more sources

The complexity of frugal colouring. [PDF]

open access: yesArab J Math, 2021
Bard S, MacGillivray G, Redlin S.
europepmc   +1 more source

Horizontal visibility graph of a random restricted growth sequence. [PDF]

open access: yesAdv Appl Math, 2021
Mansour T, Rastegar R, Roitershtein A.
europepmc   +1 more source

Induced cycle structure and outerplanarity

open access: yesDiscrete Mathematics, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Approximate realizations for outerplanaric degree sequences

open access: yesJournal of Computer and System Sciences
We study the question of whether a sequence d = (d_1,d_2, \ldots, d_n) of positive integers is the degree sequence of some outerplanar (a.k.a. 1-page book embeddable) graph G. If so, G is an outerplanar realization of d and d is an outerplanaric sequence.
Amotz Bar-Noy   +4 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy