Results 31 to 40 of about 11,653,744 (332)

Inner product spaces and quadratic functional equations

open access: yesAdvances in Difference Equations, 2021
In this paper, we introduce the functional equations f ( 2 x − y ) + f ( x + 2 y ) = 5 [ f ( x ) + f ( y ) ] , f ( 2 x − y ) + f ( x + 2 y ) = 5 f ( x ) + 4 f ( y ) + f ( − y ) , f ( 2 x − y ) + f ( x + 2 y ) = 5 f ( x ) + f ( 2 y ) + f ( − y ) , f ( 2 x
Jae-Hyeong Bae   +3 more
doaj   +1 more source

On the quadratic Fock functor [PDF]

open access: yes, 2012
We prove that the quadratic second quantization of an operator p on $L^2(\mathbb{R}^d)\cap L^\infty (\mathbb{R}^d)$ is an orthogonal projection on the quadratic Fock space if and only if p =MI, where MI is a multiplication operator by a characteristic ...
Dhahri, Ameur
core   +2 more sources

Numerical Methods for Solving Linear Time Varying Quadratic Optimal Control Problems

open access: yesResults in Control and Optimization, 2022
In this article, we discussed linear time varying optimal control problems with quadratic performance index, and approximated control variable, state variable and performance index. There are many different numerical processes for approximating of linear
Adane Akate Ayalew
doaj   +1 more source

EXPLORING MATHEMATICAL REPRESENTATIONS IN SOLVING ILL-STRUCTURED PROBLEMS: THE CASE OF QUADRATIC FUNCTION

open access: yesJME (Journal of Mathematics Education), 2019
Mathematical representation has an essential role in solving mathematical problems. However, there are still many mathematics education students who have difficulty in representing ill-structured problems.
Ika Santia   +4 more
semanticscholar   +1 more source

Comparison of Kullback-Leibler, Hellinger and LINEX with Quadratic Loss Function in Bayesian Dynamic Linear Models: Forecasting of Real Price of Oil [PDF]

open access: yesInternational Journal of Business and Development Studies, 2020
In this paper we intend to examine the application of Kullback-Leibler, Hellinger and LINEX loss function in Dynamic Linear Model using the real price of oil for 106 years of data from 1913 to 2018 concerning the asymmetric problem in filtering and ...
Esmaiel Abounoori, Mohsen Ali Heydari
doaj   +1 more source

Exploring the Conceptual Understanding of the Quadratic Function Concept in Teachers’ Colleges in Zimbabwe

open access: yesEurasia Journal of Mathematics, Science and Technology Education, 2019
This paper reports on an exploration of preservice teachers’ understanding of the quadratic function concept in Zimbabwe. These concepts were taught to preservice teachers studying for a diploma in Education wishing to specialize in the teaching of ...
L. Mutambara, Jane Tendere, C. Chagwiza
semanticscholar   +1 more source

STUDENTS’ ERRORS IN TRANSLATING MATHEMATICAL REPRESENTATIONS FROM SYMBOLIC TO GRAPHICAL FORM IN QUADRATIC FUNCTIONS

open access: yesAksioma: Jurnal Program Studi Pendidikan Matematika
Representation is an important element in mathematics learning that helps make abstract mathematical ideas more concrete. Changes between forms of representation, called translations of mathematical representations, are necessary in mathematics learning.
Rizqi Febriana Safitri   +2 more
doaj   +1 more source

Logarithmic correction in the deformed ${\rm AdS}_5$ model to produce the heavy quark potential and QCD beta function

open access: yes, 2010
We stude the \textit{holographic} QCD model which contains a quadratic term $ -\sigma z^2$ and a logarithmic term $-c_0\log[(z_{IR}-z)/z_{IR}]$ with an explicit infrared cut-off $z_{IR}$ in the deformed ${\rm AdS}_5$ warp factor. We investigate the heavy
E. Witten   +5 more
core   +1 more source

Alienation of the Set-Valued Drygas-Additive and Quadratic-Additive Functional Equations [PDF]

open access: yesSahand Communications in Mathematical Analysis
Consider $Y$ as a real Hausdorff topological vector space and $(G,+)$ as a  Abelian group  uniquely divisible by 2. In this paper, the solutions and stability of the Pexiderized set-valued functional equations\begin{align*}    f(x+y)+f(x-y)+g(x+y)&=2f(x)+
Elham Mohammadi   +2 more
doaj   +1 more source

A binary quadratic function negative‐determination lemma and its application to stability analysis of systems with two additive time‐varying delay components

open access: yesIET Control Theory & Applications, 2021
This paper concentrates on the stability problem of systems with two additive time‐varying delay components. For the construction of Lyapunov–Krasovskii functional (LKF), in the case that the introduced augmented vector contains the double integral term ...
Meng Liu, Yong He, Lin Jiang
doaj   +1 more source

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