Download PDF by Lamberto Cesari: Asymptotic Behavior and Stability Problems in Ordinary

By Lamberto Cesari

ISBN-10: 3540029680

ISBN-13: 9783540029687

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Read Online or Download Asymptotic Behavior and Stability Problems in Ordinary Differential Equations Second Edition (Ergebnisse Der Mathematik Und Ihrer Grenzgebiete. 2. Folge) PDF

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Extra info for Asymptotic Behavior and Stability Problems in Ordinary Differential Equations Second Edition (Ergebnisse Der Mathematik Und Ihrer Grenzgebiete. 2. Folge)

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T)]. (et) det ~ p ~ and. ;(t)]:s;; O. i = 1. • n. 1Yilt) 1:s;; 1cd + f t, Moreover. i(et) det] dfJ, i = 1..... n. also t" ~ 1di;(fJ)llIy({J)H dfJ. 1 + ... + 1'n I. also t lIy(t)l\:;;;: C i +t,f I\D (fJ)I\'l\y(fJ)1l dfJ· = 1, ... , n. 3. 2. i) we have t lIy(t)1I ~ C exp fIlD({J)1I d{J, t, + and since D (t) is of class L, also II y (t) II :;:;; M < 00, where M is a convenient constant. In the case that some of the roots Ai, i = 1, ... , n, with real part negative, are not distinct, then the whole algebraic process described above can be modified, allowing diagonal matrices A (t) with convenient" ones" above or below the main diagonal as for constant matrices.

5)]. The more detailed results of O. HAUPT [1] and J. E. WILKINS [1], A. WINTNER [3] on the subject cannot be discussed here. S. qi(t)! (log t)N-l dt < + 00, where N denotes the maximum multiplicity of the roots of the indicial equation. 1) behave as t-+O as the corresponding integrals of the Fuchs-type equation. See also A. GHIZZETTI [2], 1. M. SOBOL [1]. For a further investigation on the subject see A. 'VINTNER [30]. 8, Linear asymptotic equilibrium. We shall first state and prove the following statement whose interest goes beyond the application we will give below.

Iii) If lim J A(oc) doc < + 00. lim J A(OC) doc> - o 00. 1) 0 is restrictively stable. In particular. the contention holds if the following limits exist and +00 J A(oc) doc o < + 00. +00 J o A(OC) doc >- 00. :;;;; A(t) :s; IIH(t) II :s; II A (t)lI. (3·10·3) 3. 2) are certainly verified if +00 IIH(t) II dt < f 49 + 00 (Z. 8). Finally, +00 certainly satisfied if f IIA (t) + A-I (t)1I dt < + 00. LEWSKI [7], A. 10. 11. Nonhomogeneous systems. Concerning nonhomogeneous differential equations and systems the following original result of O.

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Asymptotic Behavior and Stability Problems in Ordinary Differential Equations Second Edition (Ergebnisse Der Mathematik Und Ihrer Grenzgebiete. 2. Folge) by Lamberto Cesari


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