Results 221 to 230 of about 3,868 (256)

HYPERSTABILITY OF GENERALISED LINEAR FUNCTIONAL EQUATIONS IN SEVERAL VARIABLES

Bulletin of the Australian Mathematical Society, 2020
Zhang [‘On hyperstability of generalised linear functional equations in several variables’, Bull. Aust. Math. Soc.92 (2015), 259–267] proved a hyperstability result for generalised linear functional equations in several variables by using Brzdęk’s fixed ...
T. Phochai, S. Saejung
semanticscholar   +1 more source

Rigidity of hyperstable complexes

Archiv der Mathematik, 2008
A module J over a ring \(\bigwedge\) is said to be hyperstable when \(J \cong J \oplus {\bigwedge}^{\infty}\). Over a module M for which Ext\(^{n+1}(M, \bigwedge) = 0\) we show that the projective n-stems \({\mathcal{P}}\) for which \(\pi_n({\mathcal{P}})\) is hyperstable constitute a single homotopy type.
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A simplified viewpoint of hyperstability

IEEE Transactions on Automatic Control, 1968
The definition of a hyperstable system according to Popov is given a network theoretic interpretation, and proofs are presented outlining the connection between passive and hyperstable systems.
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Aza-Glycine Induces Collagen Hyperstability

Journal of the American Chemical Society, 2015
Hydrogen bonding is fundamental to life on our planet, and nature utilizes H-bonding in nearly all biomolecular interactions. Often, H-bonding is already maximized in natural biopolymer systems such as nucleic acids, where Watson-Crick H-bonds are fully paired in double-helical structures.
David M. Chenoweth, Yitao Zhang, Roy M. Malamakal   +2 more
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Hyperstable arousal regulation in multiple sclerosis

Psychoneuroendocrinology, 2019
Fatigue is common in multiple sclerosis (MS) patients. Exhaustion of physiological reserves and mental stress are postulated causes, the latter supported by more pronounced hypothalamic-pituitary-adrenal (HPA) axis activation in fatigued patients. Divergent dysregulation of arousal appears to play important roles in depression- (hyperstable arousal ...
Klara Meyer, Sebastian Olbrich, Maike Schlingmann, Florian Then Bergh, Florian Then Bergh, Muriel Stoppe   +5 more
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Parameter optimized hyperstable controllers

[1991] Proceedings of the 30th IEEE Conference on Decision and Control, 2002
A parameterization of hyperstable linear time-invariant controllers is proposed, where the free parameters are to be determined by parameter optimization in order to meet various design requirements of the closed-loop system. The class of hyperstable controllers is of special importance since a control loop with hyperstable controller is guaranteed to ...
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On hyperstability of the biadditive functional equation

Acta Mathematica Scientia, 2017
Abstract We present results on approximate solutions to the biadditive equation f ( x + y , z - w ) + f ( x - y , z + w ) = 2 f ( x , z ) - 2 f ( y , w ) on a restricted domain. The proof is based on a quite recent fixed point theorem in some function spaces.
Janusz Brzdęk, Iz-iddine EL-Fassi, Abdellatif Chahbi, Samir Kabbaj   +3 more
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On the stabilization of bilinear systems via hyperstability

IEEE Transactions on Automatic Control, 1975
Sufficient conditions for asymptotic feedback stabilization of both continuous and discrete bilinear systems are given using a hyperstability type technique.
Tudor C. Ionescu, R. Monopoli
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The hyperstability approach to VSCS design

1990
A systematic approach to the design of VSC systems has been given. Using the hyperstability theory, the stability of the global system has been established and the existence of the sliding modes. Simple control laws can be used and high speed of response is obtainable by forcing the system with maximum allowable signals, e.g.
Mario Innocenti, Aldo Balestrino
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Closed-loop hyperstability of interval plants

IEEE Transactions on Automatic Control, 1994
Summary: This note examines the conditions for robust bounded-input bounded-output closed-loop stability of interval plants when there is a nonlinear element in the feedback path. Specifically, we present the robust generalized circle criterion and the Popov's criterion.
Yeng Chai Soh, Y.K. Foo
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