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On oscilatory fourth order nonlinear neutral differential equations – IV

  • Arun Kumar Tripathy EMAIL logo und Rashmi Rekha Mohanta
Veröffentlicht/Copyright: 5. Oktober 2019
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Abstract

In this paper, oscillation of all solutions of fourth order functional differential equations of neutral type of the form

(r(t)(y(t)+p(t)y(tτ)))+q(t)G(y(tσ))=0

are studied under the assumption

0tr(t)dt<

for various ranges of p(t)

MSC 2010: Primary 34C10; 34C15
  1. (Communicated by Michal Fečkan)

Acknowledgement

The authors are thankful to the referee for his/her helpful suggestions and necessary corrections in the completion of this paper.

References

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Received: 2018-01-05
Accepted: 2018-09-04
Published Online: 2019-10-05
Published in Print: 2019-10-25

© 2019 Mathematical Institute Slovak Academy of Sciences

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