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On Some Properties of Solutions of Second Order Linear Functional Differential Equations

  • I. Kiguradze
Published/Copyright: February 18, 2010
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Georgian Mathematical Journal
From the journal Volume 1 Issue 5

Abstract

The properties of solutions of the equation u″(t) = p1 (t)u(τ1(t)) + p2(t)u′(τ2(t)) are investigated where pi: [a, +∞[→ R (i = 1, 2) are locally summable functions, τ1 : [a, +∞[→ R is a measurable function and τ2 : [a, +∞[→ R is a nondecreasing locally absolutely continuous one. Moreover, τi(t) ≥ t (i = 1, 2), p1 (t) ≥ 0, , ε = const > 0 and . In particular, it is proved that solutions whose derivatives are square integrable on [a, +∞ [ form a one-dimensional linear space and for any such solution to vanish at infinity it is necessary and sufficient that .

Received: 1993-08-03
Published Online: 2010-02-18
Published in Print: 1994-October

© 1994 Plenum Publishing Corporation

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