Results 11 to 20 of about 12,289 (205)

Chromaticity-Adaptive Generalized Spatial Modulation for MIMO VLC With Multi-Color LEDs

open access: yesIEEE Photonics Journal, 2019
In this paper, we propose a chromaticity-adaptive generalized spatial modulation (CA-GSM) method for multiple-input multiple-output (MIMO) visible light communication (VLC) systems with quadrichromatic LEDs (QLEDs).
Ye Xiao, Yi-Jun Zhu
doaj   +1 more source

Lines in supersingular quartics

open access: yes, 2021
We show that the number of lines contained in a supersingular quartic surface is 40 or at most 32, if the characteristic of the field equals 2, and it is 112, 58, or at most 52, if the characteristic equals 3.
Degtyarev, Alex
core   +1 more source

Small Extended Generalized Quadrangles

open access: yesEuropean Journal of Combinatorics, 1990
An extended generalized quadrangle (EGQ) is a connected point-block incidence structure \({\mathcal G}\) with the property that for any point P the points collinear with P (and different from P) and the blocks incident with P form a generalized quadrangle known as the (point) residue at P.
Cameron, P.J., Fisher, P.H.
openaire   +1 more source

The pseudo-hyperplanes and homogeneous pseudo-embeddings of the generalized quadrangles of order (3, t) [PDF]

open access: yes, 2012
In the paper "as reported by De Bruyn (Adv Geom, to appear)", we introduced the notions of pseudo-hyperplane and pseudo-embedding of a point-line geometry and proved that every generalized quadrangle of order (s, t), 2 a parts per thousand currency sign ...
De Bruyn, Bart
core   +2 more sources

A Combinatorial Grassmannian Representation of the Magic Three-Qubit Veldkamp Line

open access: yesEntropy, 2017
It is demonstrated that the magic three-qubit Veldkamp line occurs naturally within the Veldkamp space of a combinatorial Grassmannian of type G 2 ( 7 ) , V ( G 2 ( 7 ) ) .
Metod Saniga
doaj   +1 more source

A spectrum result on maximal partial ovoids of the generalized quadrangle Q(4,q), q odd [PDF]

open access: yes, 2010
In this article, we prove a spectrum result on maximal partial ovoids of the generalized quadrangle Q(4, q), q odd, i.e. for every integer k in the interval [a, b], where a approximate to q2 and b approximate to 9/10q2, there exists a maximal partial ...
Pepe, Valentina   +2 more
core   +1 more source

On collineations and dualities of finite generalized polygons [PDF]

open access: yes, 2009
In this paper we generalize a result of Benson to all finite generalized polygons. In particular, given a collineation theta of a finite generalized polygon S, we obtain a relation between the parameters of S and, for various natural numbers i, the ...
Temmermans, Beukje   +2 more
core   +2 more sources

On hyperovals of polar spaces [PDF]

open access: yes, 2010
We derive lower and upper bounds for the size of a hyperoval of a finite polar space of rank 3. We give a computer-free proof for the uniqueness, up to isomorphism, of the hyperoval of size 126 of H(5, 4) and prove that the near hexagon E-3 has up to ...
A. Del Fra   +23 more
core   +2 more sources

An inequality for generalized quadrangles [PDF]

open access: yesProceedings of the American Mathematical Society, 1978
Let S \mathcal {S} be a generalized quadrangle of order (s, t). Let X and Y be disjoint sets of pairwise noncollinear points of S \mathcal {S} such that each point of X is collinear with each point of Y. If m = | X |
openaire   +2 more sources

A power-based perspective of mechanical systems [PDF]

open access: yes, 2005
This paper is concerned with the construction of a power-based modeling framework for a large class of mechanical systems. Mathematically this is formalized by proving that every standard mechanical system (with or without dissipation) can be written as ...
Jeltsema, D.,, Scherpen, J. M. A.,
core   +2 more sources

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