Moment contractivity and stability exponents of nonlinear stochastic dynamical systems

  • Nonlinear stochastic dynamical systems as ordinary stochastic differential equations and stochastic difference methods are in the center of this presentation in view of the asymptotical behaviour of their moments. We study the exponential p-th mean growth behaviour of their solutions as integration time tends to infinity. For this purpose, the concepts of nonlinear contractivity and stability exponents for moments are introduced as generalizations of well-known moment Lyapunov exponents of linear systems. Under appropriate monotonicity assumptions we gain uniform estimates of these exponents from above and below. Eventually, these concepts are generalized to describe the exponential growth behaviour along certain Lyapunov-type functionals.

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Author:Henri Schurz
URN (permanent link):urn:nbn:de:hbz:386-kluedo-7667
Serie (Series number):Berichte der Arbeitsgruppe Technomathematik (AGTM Report) (215)
Document Type:Preprint
Language of publication:English
Year of Completion:1999
Year of Publication:1999
Publishing Institute:Technische Universität Kaiserslautern
Faculties / Organisational entities:Fachbereich Mathematik
DDC-Cassification:510 Mathematik
MSC-Classification (mathematics):34F05 Equations and systems with randomness [See also 34K50, 60H10, 93E03]
60H10 Stochastic ordinary differential equations [See also 34F05]
93D05 Lyapunov and other classical stabilities (Lagrange, Poisson, Lp; lp, etc.)

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