Results 11 to 20 of about 3,026,385 (239)

Random stability and hyperstability of multi-quadratic mappings [PDF]

open access: yes, 2022
In this paper, we introduce a new quadratic functional equation. In light of this equation, we define the multi-quadratic mappings and reduce the system of n equations defining the multi-quadratic mappings to a single equation.
Park, Choonkil   +5 more
core   +1 more source

The stability analysis of systems with nonlinear feedback expressed by a quadratic program [PDF]

open access: yes, 2006
We consider the stability of the feedback connection of a stable linear time invariant (LTI) plant with a static nonlinearity expressed by a certain class of quadratic program (QP).
Lennox, B   +5 more
core   +1 more source

Lyapunov stability analysis of higher-order 2D systems

open access: yes, 2010
We prove a necessary and sufficient condition for the asymptotic stability of a 2D system described by a system of higher-order linear partial difference equations.
Paolo Rapisarda   +8 more
core   +2 more sources

HYERS-ULAM STABILITY OF QUADRATIC FUNCTIONAL EQUATIONS [PDF]

open access: yes, 2020
In this paper,we establish the general solution and the generalized Hyers-Ulam stability problem ...
P Hyers-Ulam Stability Of Quadratic Functional Equations…   +1 more
core  

Reformulating mixed-integer quadratically constrained quadratic programs [PDF]

open access: yes, 2011
It is well known that semidefinite programming (SDP) can be used to derive useful relaxations for a variety of optimisation problems. Moreover, in the particular case of mixed-integer quadratic programs, SDP has been used to reformulate problems, rather ...
Galli, L, Letchford, A. N.
core   +4 more sources

A New Class of General Linear Method with Inherent Quadratic Stability for Solving Stiff Differential Systems

open access: yesCoRR
This article proposes a new class of general linear method with $p=q$ and $r=s=p+1$. The construction of the present method is carried out using order conditions and error minimization subject to $A$- stability constraints. The proposed time integration schemes are $A$- and $L$-stable general linear methods (GLMs) equipped with inherent quadratic ...
Sakshi Gautam, Ram K. Pandey
openaire   +2 more sources

Patient-Specific Variations in Biomarkers across Gingivitis and Periodontitis. [PDF]

open access: yesPLoS ONE, 2015
This study investigates the use of saliva, as an emerging diagnostic fluid in conjunction with classification techniques to discern biological heterogeneity in clinically labelled gingivitis and periodontitis subjects (80 subjects; 40/group) A battery of
Radhakrishnan Nagarajan   +4 more
doaj   +1 more source

Biopsychosocial Determinants of Hand Function and Its Trajectories Over Five Years in Patients With Hand Osteoarthritis

open access: yesArthritis Care &Research, EarlyView.
Objective This study aimed to investigate hand function trajectories over five years in primary hand osteoarthritis (OA). Additionally, determinants of baseline and longitudinal hand function were assessed. Methods A total of 538 patients with both baseline and five‐year study visits were analyzed.
Annemiek V. E. M. Olde Meule   +4 more
wiley   +1 more source

Hyers–Ulam Stability of a Multi-Variable Additive-Quadratic Functional Equation

open access: yesMathematics
In this paper, we investigate the generalized Hyers–Ulam stability of a multi-variable additive-quadratic functional equation in Banach spaces. Unlike traditional mixed-type equations that segregate variables, the proposed equation embeds a dense ...
Jae-Hyeong Bae, Won-Gil Park
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

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