Results 21 to 30 of about 254,621 (262)
On Another Class of Strongly Perfect Graphs
Mathematics, 2022 For a commutative ring R with unity, the associate ring graph, denoted by AG(R), is a simple graph with vertices as nonzero elements of R and two distinct vertices are adjacent if they are associates.
Neha Kansal +3 more
doaj +1 more source
Planar and Quasi-Planar Simultaneous Geometric Embedding [PDF]
The Computer Journal, 2014 A simultaneous geometric embedding SGE of two planar graphs G 1 and G 2 with the same vertex set is a pair of straight-line planar drawings Γ1 of G 1 and Γ2 of G 2 such that each vertex is drawn at the same point in Γ1 and Γ2. Many papers have been devoted to the study of which pairs of graphs admit a SGE, and both positive and negative results have ...
Emilio Di Giacomo +4 more
openaire +1 more source
Circularly Polarized Broadband Printed Antenna for Wireless Applications
Sensors, 2018 A simple, compact sickle-shaped printed antenna with a slotted ground plane is designed and developed for broadband circularly polarized (CP) radiation.
Md. Samsuzzaman, Mohammad Tariqul Islam
doaj +1 more source
A note on comaximal ideal graph of commutative rings
AKCE International Journal of Graphs and Combinatorics, 2020 Let be a commutative ring with identity. The comaximal ideal graph of is a simple graph with its vertices are the proper ideals of R which are not contained in the Jacobson radical of , and two vertices and are adjacent if and only if .
S. Kavitha, R. Kala
doaj +1 more source
Computing Planarity in Computable Planar Graphs
Graphs and Combinatorics, 2016 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Oscar Levin, Taylor McMillan
openaire +2 more sources
The Existence of Planar Hypotraceable Oriented Graphs [PDF]
Discrete Mathematics & Theoretical Computer Science, 2017 A digraph is \emph{traceable} if it has a path that visits every vertex. A digraph $D$ is \emph{hypotraceable} if $D$ is not traceable but $D-v$ is traceable for every vertex $v\in V(D)$.
Susan van Aardt +2 more
doaj +1 more source
A Planar Multifunctional Four-Port Antenna System for Sub-Urban Mobile Tablet
IEEE Access, 2019 A planar multifunctional four-port antenna system integrated on one substrate applied in the suburban mobile tablet is presented in this paper. The types of these antennas are selected based on different functions and the interactions between them are ...
Li Ying Nie +3 more
doaj +1 more source
Design of Wideband Microstrip to SICL Transition for Millimeter-Wave Applications
IEEE Access, 2020 In this communication, the design and working principle of a wideband microstrip to substrate integrated coaxial line (SICL) planar transition for millimeter-wave applications is presented.
Idury Satya Krishna, Soumava Mukherjee
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2014 We propose a technology for manipulating the position and attitude of an object on a planar surface in a contactless manner. This technology involves multiple ejectors that stream jets of compressed air onto an object from various directions.
Tsubasa MATSUSHITA +8 more
doaj +1 more source
Dual Circularly Polarized Planar Four-Port MIMO Antenna with Wide Axial-Ratio Bandwidth
Sensors, 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