Results 31 to 40 of about 1,619,536 (329)

Compact Drawings of 1-Planar Graphs with Right-Angle Crossings and Few Bends

open access: yes, 2018
We study the following classes of beyond-planar graphs: 1-planar, IC-planar, and NIC-planar graphs. These are the graphs that admit a 1-planar, IC-planar, and NIC-planar drawing, respectively.
C Bachmaier   +13 more
core   +1 more source

Dual Circularly Polarized Planar Four-Port MIMO Antenna with Wide Axial-Ratio Bandwidth

open access: yesSensors, 2020
A broadband compact-sized planar four-port multiple-input–multiple-output (MIMO) antenna with polarization diversity is presented. The proposed dual circularly polarized (CP) MIMO antenna consists of four G-shaped monopole elements, two of which are left-
Sachin Kumar   +4 more
doaj   +1 more source

Microwave Planar Resonant Solutions for Glucose Concentration Sensing: A Systematic Review

open access: yesApplied Sciences, 2021
The measurement of glucose concentration finds interesting potential applications in both industry and biomedical contexts. Among the proposed solutions, the use of microwave planar resonant sensors has led to remarkable scientific activity during the ...
Carlos G. Juan   +3 more
doaj   +1 more source

Conductance through the disclination dipole defect in metallic carbon nanotubes

open access: yes, 2010
The electronic transport properties of a metallic carbon nanotube with the five-seven disclination pair characterized by a lattice distortion vector are investigated.
D V Kolesnikov   +4 more
core   +1 more source

Planar infinite groups

open access: yes, 2014
We will determine all infinite $2$-locally finite groups as well as infinite $2$-groups with planar subgroup graph and show that infinite groups satisfying the chain conditions containing an involution do not have planar embeddings.
Erfanian, Ahmad   +2 more
core   +1 more source

A typical graph structure of a ring [PDF]

open access: yesTransactions on Combinatorics, 2015
The zero-divisor graph of a commutative ring R with respect to nilpotent elements is a simple undirected graph $Gamma_N^*(R)$ with vertex set Z_N(R)*, and two vertices x and y are adjacent if and only if xy is nilpotent and xy is nonzero, where Z_N(R)={x
R. Kala , S. Kavitha
doaj  

Genus of total graphs from rings: A survey

open access: yesAKCE International Journal of Graphs and Combinatorics, 2018
Let be a commutative ring. The total graph of is the undirected graph with vertex set and two distinct vertices and are adjacent if is a zero divisor in In this paper, we present a survey of results on the genus of and three of its generalizations.
T. Tamizh Chelvam, T. Asir
doaj   +1 more source

The Renormalization of Non-Commutative Field Theories in the Limit of Large Non-Commutativity

open access: yes, 2003
We show that renormalized non-commutative scalar field theories do not reduce to their planar sector in the limit of large non-commutativity. This follows from the fact that the RG equation of the Wilson-Polchinski type which describes the genus zero ...
Aref'eva   +11 more
core   +3 more sources

Planar functions over fields of characteristic two [PDF]

open access: yes, 2014
Classical planar functions are functions from a finite field to itself and give rise to finite projective planes. They exist however only for fields of odd characteristic.
Schmidt, Kai-Uwe, Zhou, Yue
core   +1 more source

Quasi-planar optics: computing light propagation and scattering in planar waveguide arrays

open access: yes, 2009
We analyze wave propagation in coupled planar waveguides, pointing specific attention to modal cross-talk and out-of-plane scattering in quasi-planar photonics.
Barnes   +32 more
core   +1 more source

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