Periodic boundary-value problem for third-order linear functional differential equations

For the linear functional differential equation of the third order u''' (t) = l(u)(t) + q(t), theorems on the existence and uniqueness of a solution satisfying the conditions u( i)(0) = u( i), i=0,1,2, are established. Here, l is a linear continuous operator transforming...

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Datum:2008
Hauptverfasser: Hakl, R., Хакл, Р.
Format: Artikel
Sprache:Englisch
Veröffentlicht: Institute of Mathematics, NAS of Ukraine 2008
Online Zugang:https://umj.imath.kiev.ua/index.php/umj/article/view/3164
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Назва журналу:Ukrains’kyi Matematychnyi Zhurnal
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Ukrains’kyi Matematychnyi Zhurnal
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Zusammenfassung:For the linear functional differential equation of the third order u''' (t) = l(u)(t) + q(t), theorems on the existence and uniqueness of a solution satisfying the conditions u( i)(0) = u( i), i=0,1,2, are established. Here, l is a linear continuous operator transforming the space C([0, ω];R) into the space L([0, ω];R), and q ∈ L([0, ω];R). The question on the nonnegativity of a solution of the considered boundary-value problem is also studied.