Results 111 to 120 of about 713,494 (298)

On the Total Number of Bends for Planar Octilinear Drawings

open access: yesJournal of Graph Algorithms and Applications, 2017
An octilinear drawing of a planar graph is one in which each edge is drawn as a sequence of horizontal, vertical and diagonal at $45^\circ$ and $-45^\circ$ line-segments.
Michael Bekos   +2 more
doaj   +1 more source

On the reconstruction of planar graphs

open access: yesJournal of Combinatorial Theory, Series B, 2007
AbstractWe show that the planarity of a graph can be recognized from its vertex deleted subgraphs, which answers a question posed by Bondy and Hemminger in 1979. We also state some useful counting lemmas and use them to reconstruct certain planar graphs.
Mark Bilinski   +2 more
openaire   +1 more source

Advancing SafeWax, A Bio‐Inspired Superhydrophobic Coating, Toward Sustainable and Climate‐Resilient Crop Protection

open access: yesAdvanced Functional Materials, EarlyView.
This study advances SafeWax, a bio‐inspired, fatty‐acids‐based superhydrophobic coating, by identifying an agriculturally compliant solvent and revealing how solvent‐controlled Fatty acid crystallization governs the coating's microscopic structure and performance.
Niv Ben‐Arie   +13 more
wiley   +1 more source

Good triangulations yield good tours [PDF]

open access: yes, 2008
Consider the following heuristic for planar Euclidean instances of the Traveling Salesman Problem (TSP): select a subset of the edges which induces a planar graph, and solve either the TSP or its graphical relaxation on that graph. In this paper, we give
Pearson, N, Letchford, A N
core   +3 more sources

Beyond Outerplanarity

open access: yesComputing in Geometry and Topology
We study straight-line drawings of graphs where the vertices are placed in convex position in the plane, i.e., convex drawings. We consider two families of graph classes with convex drawings: outer $k$-planar graphs, where each edge is crossed by at ...
Steven Chaplick   +4 more
doaj   +1 more source

Recursive generation of simple planar 5-regular graphs and pentangulations

open access: yesJournal of Graph Algorithms and Applications, 2011
We describe how the 5-regular simple planar graphs can all be obtained from an elementary family of starting graphs by repeatedly applying a few local expansion operations. The proof uses an amalgam of theory and computation.
Mahdieh Hasheminezhad   +2 more
doaj   +1 more source

Asymmetric game perfect graphs and the circular coloring game of weighted graphs [PDF]

open access: yes, 2011
Zacharopoulos P. Asymmetric game perfect graphs and the circular coloring game of weighted graphs.
Zacharopoulos, Panagiotis
core  

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

open access: yesAdvanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow   +6 more
wiley   +1 more source

On the Maximum Independent Set Problem in Subclasses of Planar Graphs

open access: yesJournal of Graph Algorithms and Applications, 2010
The maximum independent set problem is known to be NP-hard in the class of planar graphs. In the present paper, we study its complexity in hereditary subclasses of planar graphs.
Vadim Lozin, Martin Milanič
doaj   +1 more source

Planar domination graphs

open access: yesDiscrete Mathematics, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Elaine M. Eschen   +2 more
openaire   +1 more source

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