Results 41 to 50 of about 446,471 (361)

On a Quadratic-Trigonometric Functional Equation and Some Applications [PDF]

open access: yesTransactions of the American Mathematical Society, 1995
Our main goal is to determine the general solution of the functional equation \[ f 1 ( x y ) + f 2
Prasanna K. Sahoo   +3 more
openaire   +3 more sources

General Solution and Stability of Additive-Quadratic Functional Equation in IRN-Space

open access: yesJournal of Function Spaces, 2021
The investigation of the stabilities of various types of equations is an interesting and evolving research area in the field of mathematical analysis. Recently, there are many research papers published on this topic, especially additive, quadratic, cubic,
K. Tamilvanan   +4 more
doaj   +1 more source

On a functional equation connected with Rao’s quadratic entropy [PDF]

open access: yesProceedings of the American Mathematical Society, 1994
We determine the general solution of the functional equation fxy, \[ f ( x + y 2 ) + f ( x −
Prasanna K. Sahoo   +3 more
openaire   +3 more sources

On the Orthogonal Stability of the Pexiderized Quadratic Equation

open access: yes, 2005
The Hyers--Ulam stability of the conditional quadratic functional equation of Pexider type f(x+y)+f(x-y)=2g(x)+2h(y), x\perp y is established where \perp is a symmetric orthogonality in the sense of Ratz and f is odd.Comment: 10 pages, Latex; Changed ...
Aczél J.   +12 more
core   +2 more sources

ON THE STABILITY OF A QUADRATIC FUNCTIONAL EQUATION

open access: yesJournal of the Chungcheong Mathematical Society, 2012
In this paper, for any fixed integer $n\;>\;m\;{\geq}\;1$, we investigate the generalized Hyers-Ulam stability of the following quadratic functional equation in -Banach spaces, where $0\;
Won-Gil Park, Sang-Baek Lee, Mi Hyun Han
openaire   +2 more sources

On the Stability of Quadratic Functional Equations in F-Spaces

open access: yesJournal of Function Spaces, 2016
The Hyers-Ulam-Rassias stability of quadratic functional equation f(2x+y)+f(2x-y)=f(x+y)+f(x-y)+6f(x) and orthogonal stability of the Pexiderized quadratic functional equation f(x+y)+f(x-y)=2g(x)+2h(y) in F-spaces are proved.
Xiuzhong Yang
doaj   +1 more source

Galerkin approximations for the optimal control of nonlinear delay differential equations [PDF]

open access: yes, 2017
Optimal control problems of nonlinear delay differential equations (DDEs) are considered for which we propose a general Galerkin approximation scheme built from Koornwinder polynomials.
Chekroun, Mickaël D.   +2 more
core   +2 more sources

Open-Loop and Closed-Loop Solvabilities for Stochastic Linear Quadratic Optimal Control Problems

open access: yes, 2015
This paper is concerned with a stochastic linear quadratic (LQ, for short) optimal control problem. The notions of open-loop and closed-loop solvabilities are introduced. A simple example shows that these two solvabilities are different.
Li, Xun, Sun, Jingrui, Yong, Jiongmin
core   +1 more source

Linear Quadratic Stochastic Differential Games: Open-Loop and Closed-Loop Saddle Points [PDF]

open access: yes, 2014
In this paper, we consider a linear quadratic stochastic two-person zero-sum differential game. The controls for both players are allowed to appear in both drift and diffusion of the state equation.
Sun, Jingrui, Yong, Jiongmin
core   +3 more sources

Soft‐Layered Composites with Wrinkling‐Activated Multi‐Linear Elastic Behavior, Stress Mitigation, and Enhanced Strain Energy Storage

open access: yesAdvanced Engineering Materials, EarlyView.
In this study, exciting new bi‐/multi‐linear elastic behavior of soft elastic composites that accompany the activation of wrinkling in the embedded interfacial layers is analyzed. The new features and performance of these composite materials, including dramatic enhancements in energy storage, can be tailored by the concentration of interfacial layers ...
Narges Kaynia   +2 more
wiley   +1 more source

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