Results 31 to 40 of about 168,117,835 (293)

Quadratic and nonlinear programming problems solving and analysis in fully fuzzy environment

open access: yesAlexandria Engineering Journal, 2015
This paper presents a comprehensive methodology for solving and analyzing quadratic and nonlinear programming problems in fully fuzzy environment. The solution approach is based on the Arithmetic Fuzzy Logic-based Representations, previously founded on ...
Walaa Ibrahim Gabr
doaj   +1 more source

Quadratic Forms in Random Matrices with Applications in Spectrum Sensing

open access: yesEntropy
Quadratic forms with random kernel matrices are ubiquitous in applications of multivariate statistics, ranging from signal processing to time series analysis, biomedical systems design, wireless communications performance analysis, and other fields ...
Daniel Gaetano Riviello   +2 more
doaj   +1 more source

Nonlinear Optical Molecular Switches for Alkali Ion Identification

open access: yesMolecules, 2014
This work demonstrates by means of DFT and ab initio calculations that recognition of alkali cations can be achieved by probing the variations of the second-order nonlinear optical properties along the commutation process in spiropyran/merocyanine ...
Aurélie Plaquet   +2 more
doaj   +1 more source

On old relations of Lie theory, classical geometry and gauge theory

open access: yesSciPost Physics Proceedings, 2023
Having been led by hadron interactions and low-energy photoproduction to SU(4) and non-compact SU*(4) symmetry, the general background turned out to be projective geometry (PG) of $P^3$, or when considering line and Complex geometry to include gauge ...
Rolf Dahm
doaj   +1 more source

Systems of quadratic forms.

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 1984
Let \(u_ F(r)\) be the smallest integer such that every system of r quadratic forms in n variables, defined over a field F, has a nontrivial common zero if \(n>u_ F(r)\). Let \(u_ F(r)=\infty\) if no such integer exists. Then \(u_ F(r)\leq frac{1}{2}(r^ 2+r)u_ F(1)\) and there exist fields for which this bound is best possible when \(r=1,2,3\). If F is
openaire   +2 more sources

Energy methods for lossless systems using quadratic differential forms

open access: yes, 2008
In this thesis, we study the properties of lossless systems using the concept of quadratic differential forms (QDFs). Based on observation of physical linear lossless systems, we define a lossless system as one for which there exists a QDF known as an ...
Rao, Shodhan
core   +2 more sources

Multiple-Output Production Modeled with Three Functional Forms

open access: yesJournal of Agricultural and Resource Economics, 1992
Aggregate dual models are specified to examine multiple-output production relationships in each of four major, geographically dispersed, agricultural states (California, Iowa, Texas, and Florida).
Pedro A. Villezca-Becerra   +1 more
doaj   +1 more source

Canonisation reper of complex of lines of theree-dimensional flag

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2016
The paper studies the three-parameter geometric image of the line - a complex of line of three-dimensional space of the flag. It identifies the main forms that depend linearly on three basic parameters diferentials.
A.T. Musin
doaj   +1 more source

Beamforming Using Exact Evaluation of Leakage and Ergodic Capacity of MU-MIMO System

open access: yesSensors, 2021
Closed-form evaluation of key performance indicators (KPIs) of telecommunication networks help perform mathematical analysis under several network configurations.
Ahmad Kamal Hassan, Muhammad Moinuddin
doaj   +1 more source

Hermitian Forms and Systems of Quadratic Forms

open access: yesDocumenta Mathematica, 2018
We associate to every symmetric (antisymmetric) Hermitian form a system of quadratic forms over the base field which determines its isotropy and metabolicity behaviour. It is shown that two even Hermitian forms are isometric if and only if their associated systems are equivalent.
openaire   +2 more sources

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