Results 91 to 100 of about 886,125 (210)

Strict confluent drawing

open access: yesJournal of Computational Geometry, 2016
We define strict confluent drawing, a form of confluent drawing in which the existence of an edge is indicated by the presence of a smooth path through a system of arcs and junctions (without crossings), and in which such a path, if it exists, must be ...
David Eppstein   +5 more
doaj   +1 more source

Characterizations of outerplanar graphs

open access: yesDiscrete Mathematics, 1979
AbstractThe paper presents several characterizations of outerplanar graphs, some of them are counterparts of the well-known characterizations of planar graphs and the other provide very efficient tools for outerplanarity testing, coding (i.e. isomorphism testing), and counting such graphs.
openaire   +1 more source

The Price of Upwardness [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
Not every directed acyclic graph (DAG) whose underlying undirected graph is planar admits an upward planar drawing. We are interested in pushing the notion of upward drawings beyond planarity by considering upward $k$-planar drawings of DAGs in which the
Patrizio Angelini   +10 more
doaj   +1 more source

The outerplanar crossing number of the complete bipartite graph

open access: yesDiscrete Applied Mathematics, 2022
B. Ábrego, S. Fernández-Merchant
semanticscholar   +1 more source

Outerplanar Graphs and Delaunay Triangulations [PDF]

open access: yes, 2012
Dillencourt [1] showed that all maximal outerplanar graphs can be realized as Delaunay triangulations of points in convex position. In this note, we give two new, alternate proofs.
Alam, Ashraful   +2 more
openaire   +2 more sources

Non-Preemptive Tree Packing. [PDF]

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

One-Bend Drawings of Outerplanar Graphs Inside Simple Polygons [PDF]

open access: green, 2021
Patrizio Angelini   +4 more
openalex   +1 more source

Counting Rules for Computing the Number of Independent Sets of a Grid Graph

open access: yesMathematics
The issue of counting independent sets of a graph, G, represented as i(G), is a significant challenge within combinatorial mathematics. This problem finds practical applications across various fields, including mathematics, computer science, physics, and
Guillermo De Ita Luna   +2 more
semanticscholar   +1 more source

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