Results 21 to 30 of about 82,884 (244)

The plane-width of graphs [PDF]

open access: yesJournal of Graph Theory, 2011
Map vertices of a graph to (not necessarily distinct) points of the plane so that two adjacent vertices are mapped at least a unit distance apart. The plane-width of a graph is the minimum diameter of the image of the vertex set over all such mappings.
Kaminski, Marcin   +2 more
openaire   +3 more sources

Plane Graphs with Parity Constraints [PDF]

open access: yesGraphs and Combinatorics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Aichholzer Oswin   +6 more
openaire   +3 more sources

Polychromatic Colorings of Plane Graphs [PDF]

open access: yesDiscrete & Computational Geometry, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alon, N.   +7 more
openaire   +6 more sources

Listing All Plane Graphs

open access: yesJournal of Graph Algorithms and Applications, 2008
Summary: In this paper we give a simple algorithm to generate all connected rooted plane graphs with at most m edges. A ``rooted'' plane graph is a plane graph with one designated (directed) edge on the outer face. The algorithm uses \(O(m)\) space and generates such graphs in \(O(1)\) time per graph on average without duplications.
Yamanaka, Katsuhisa, Nakano, Shin-Ichi
openaire   +1 more source

Improved Bounds for Some Facially Constrained Colorings

open access: yesDiscussiones Mathematicae Graph Theory, 2023
A facial-parity edge-coloring of a 2-edge-connected plane graph is a facially-proper edge-coloring in which every face is incident with zero or an odd number of edges of each color. A facial-parity vertex-coloring of a 2-connected plane graph is a proper
Štorgel Kenny
doaj   +1 more source

The total face irregularity strength of some plane graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
A face irregular total -labeling of a 2-connected plane graph is a labeling of vertices and edges such that their face-weights are pairwise distinct. The weight of a face under a labeling is the sum of the labels of all vertices and edges surrounding ...
Meilin I. Tilukay   +3 more
doaj   +1 more source

Strong parity vertex coloring of plane graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
A strong parity vertex coloring of a 2-connected plane graph is a coloring of the vertices such that every face is incident with zero or an odd number of vertices of each color.
Tomas Kaiser   +3 more
doaj   +1 more source

On the Hamiltonian Number of a Plane Graph

open access: yesDiscussiones Mathematicae Graph Theory, 2019
The Hamiltonian number of a connected graph is the minimum of the lengths of the closed spanning walks in the graph. In 1968, Grinberg published a necessary condition for the existence of a Hamiltonian cycle in a plane graph, formulated in terms of the ...
Lewis Thomas M.
doaj   +1 more source

Rook-drawings of Plane Graphs

open access: yesJournal of Graph Algorithms and Applications, 2017
We introduce a new type of graph drawing called "rook-drawing". A rook-drawing of a graph $G$ is obtained by placing the $n$ nodes of $G$ on the intersections of a regular grid, such that each row and column of the grid supports exactly one node. This paper focuses on rook-drawings of planar graphs. We first give a linear algorithm to compute a planar
Auber, David   +3 more
openaire   +2 more sources

Rook-Drawing for Plane Graphs [PDF]

open access: yes, 2015
Motivated by visualization of large graphs, we introduce a new type of graph drawing called "rook-drawing". A rook-drawing of a graph G is obtained by placing the n nodes of G on the intersections of a regular grid, such that each row and column of the grid supports exactly one node. This paper focuses on rook-drawings of planar graphs. We first give a
Auber, David   +3 more
openaire   +2 more sources

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