Results 31 to 40 of about 20,159 (298)

An algorithm for an 𝓁2-homological test for the planarity of a graph

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Given a finite simple graph Γ, one is able to define the presentation of an associate Coxeter group and construct a CW-complex on which the associated Coxeter group acts.
Elizabeth Donovan, Timothy Schroeder
doaj   +1 more source

On the Planarity of Certain Dembowski-Ostrom Polynomials

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2022
Planar mappings, defined by Dembowski and Ostrom, are identified as a means to construct projective planes. Then, many important applications of planar mappings appear in different fields such as cryptography and coding theory.
Zehra Aksoy, Barış Bülent Kırlar
doaj   +1 more source

An SPQR-tree-like embedding representation for level planarity

open access: yesJournal of Computational Geometry, 2023
An SPQR-tree is a data structure that efficiently represents all planar embeddings of a  connected planar graph. It is a key tool in a number of constrained planarity testing algorithms, which seek a planar embedding of a graph subject to some given set
Guido Brückner, Ignaz Rutter
doaj   +1 more source

Design and testing of a centrifugal fluidic device for populating microarrays of spheroid cancer cell cultures

open access: yesJournal of Biological Engineering, 2020
Background In current cancer spheroid culturing methods, the transfer and histological processing of specimens grown in 96-well plates is a time consuming process.
Warren Weisler   +4 more
doaj   +1 more source

Planar antennas [PDF]

open access: yesIEEE Microwave Magazine, 2006
The development of the broadband antenna for ultrawideband (UWB) applications such as communications, imaging, radar, and localization is discussed. UWB systems are based on transmitting and receiving impulses with extremely wide spectra. As the antennas for UWB should have broad operating bandwidths for impedance matching and high-gain radiation in ...
Cheng, Zhi Ning   +5 more
openaire   +3 more sources

Planar arcs [PDF]

open access: yesJournal of Combinatorial Theory, Series A, 2018
The error in the differentiation argument has been ...
Simeon Ball, Michel Lavrauw
openaire   +6 more sources

Physical Mechanism of One-Photon Absorption, Two-Photon Absorption, and Electron Circular Dichroism of 1,3,5 Triazine Derivatives Based on Molecular Planarity

open access: yesMolecules, 2023
We provide a method to regulate intramolecular charge transfer (ICT) through distorting fragment dipole moments based on molecular planarity and intuitively investigate the physical mechanisms of one-photon absorption (OPA), two-photon absorption (TPA ...
Xiangtao Chen   +9 more
doaj   +1 more source

Planar Earthmover is not in L_1 [PDF]

open access: yes2006 47th Annual IEEE Symposium on Foundations of Computer Science (FOCS'06), 2006
We show that any $L_1$ embedding of the transportation cost (a.k.a. Earthmover) metric on probability measures supported on the grid $\{0,1,...,n\}^2\subseteq \R^2$ incurs distortion $Ω(\sqrt{\log n})$. We also use Fourier analytic techniques to construct a simple $L_1$ embedding of this space which has distortion $O(\log n)$.
Assaf Naor, Gideon Schechtman
openaire   +2 more sources

Use of planar covariation in lower limb kinematics to characterize adaptations of running after cycling in elite triathletes

open access: yesFrontiers in Sports and Active Living, 2023
PurposeTo characterize alterations of lower limb intersegmental coordination during the acute phase of running after cycling among highly trained triathletes using an analysis of planar covariation.MethodsNine highly trained triathletes completed a ...
Joel A. Walsh   +3 more
doaj   +1 more source

Planar Projections of Graphs [PDF]

open access: yesDiscrete Applied Mathematics, 2020
We introduce and study a new graph representation where vertices are embedded in three or more dimensions, and in which the edges are drawn on the projections onto the axis-parallel planes. We show that the complete graph on $n$ vertices has a representation in $\lceil \sqrt{n/2}+1 \rceil$ planes.
N. R. Aravind, Udit Maniyar
openaire   +3 more sources

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