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Negativity of Green’s Functions to Focal and Two-Point Boundary Value Problems for Equations of Second Order with Delay and Impulses in Their Derivatives

Author

Listed:
  • Alexander Domoshnitsky

    (Department of Mathematics, Ariel University, Ariel 40700, Israel)

  • Sergey Malev

    (Department of Mathematics, Ariel University, Ariel 40700, Israel)

  • Vladimir Raichik

    (Department of Mathematics, Ariel University, Ariel 40700, Israel)

Abstract

We consider the second-order impulsive differential equation with impulses in derivative and without the damping term. Sufficient conditions that a nontrivial solution of the homogeneous equation having a zero of its derivative does not have a zero itself are obtained. On the basis of the obtained results on differential inequalities, which can be considered as analogues of the Vallee–Poussin theorems, new sufficient conditions on the negativity of Green’s functions are obtained.

Suggested Citation

  • Alexander Domoshnitsky & Sergey Malev & Vladimir Raichik, 2022. "Negativity of Green’s Functions to Focal and Two-Point Boundary Value Problems for Equations of Second Order with Delay and Impulses in Their Derivatives," Mathematics, MDPI, vol. 10(19), pages 1-12, October.
    • Handle: RePEc:gam:jmathe:v:10:y:2022:i:19:p:3683-:d:936447
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