scientific article; zbMATH DE number 1266996

zbMath0947.34067MaRDI QIDQ4235108

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Publication date: 2 May 1999

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zbMATH Keywords

bilinear formHelmholtz conditionsconstant delayGateaux derivativesecond-order differential-difference equation of the neutral type

Mathematics Subject Classification ID

Linear functional-differential equations (34K06) Neutral functional-differential equations (34K40)

Related Items (8)

On connection between variationality of a six-order ordinary differential equation and Hamilton-Ostrogradskii equations ⋮ Bi-variationality, symmetries and approximate solutions ⋮ On the construction of a variational principle for a certain class of differential-difference operator equations ⋮ On the existence of variational principles for differential-difference evolution equations ⋮ On the existence of variational principles for a class of the evolutionary differential-difference equations ⋮ ON THE POTENTIALITY OF A CLASS OF OPERATORS RELATIVE TO LOCAL BILINEAR FORMS ⋮ On potentiality conditions for partial differential-difference equations ⋮ On connection between variational symmetries and algebraic structures

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