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Irina Astashova



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Irina Astashova


WSEAS Transactions on Mathematics


Print ISSN: 1109-2769
E-ISSN: 2224-2880

Volume 16, 2017

Notice: As of 2014 and for the forthcoming years, the publication frequency/periodicity of WSEAS Journals is adapted to the 'continuously updated' model. What this means is that instead of being separated into issues, new papers will be added on a continuous basis, allowing a more regular flow and shorter publication times. The papers will appear in reverse order, therefore the most recent one will be on top.


Volume 16, 2017



On Qualitative Properties and Asymptotic Behavior of Solutions to Higher-Order Nonlinear Differential Equations

AUTHORS: Irina Astashova

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ABSTRACT: We discuss the asymptotic behavior of solutions to a higher-order Emden–Fowler type equation with constant potential. Several author’s results are presented concerning both positive and oscillatory solutions to equations with regular and singular nonlinearities. We discuss the existence and asymptotic behavior of “blowup” solutions. Results on the asymptotic behavior of oscillating solutions are formulated. For the third- and forth-order equations an asymptotic classification of all solutions is presented. Some applications of the results obtained are proposed

KEYWORDS: Qualitative properties, asymptotic behavior, nonlinear equations, blow-up, oscillatory solutions

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[14] I. V. Astashova, Application of Dynamical Systems to the Study of Asymptotic Properties of Solutions to Nonlinear Higher-Order Differential Equations, J. Math. Sci. (N. Y.), 126:5 (2005), 1361–1391. (Translations of Sovrem. Mat. Prilozh., (2003), 8, 3–33.)

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[21] I. V. Astashova, On power and non-power asymptotic behavior of positive solutions to Emden-Fowler type higher-order equations, Advances in Difference Equations. SpringerOpen Journal, 2013:220. DOI: 10.1186/1687-1847- 2013-220, 1–15.

[22] I. V. Astashova, On Asymptotic Behavior of Solutions to a Fourth Order Nonlinear Differential Equation, Mathematical Methods in Finance and Business Adinistration. Proceedings of the 1st WSEAS International Conference on Pure Mathematics (PUMA ’14), Tenerife, Spain, January 10-12, 2014, ISBN: 978-960-474-360-5, WSEAS Press, 2013, 32–41.

[23] I. Astashova, Positive solutions with nonpower asymptotic behavior and quasiperiodic solutions to an Emden–Fowler type higher order equations, Journal of Mathematical Sciences. 2015. 208, 1. P. 8–23.

[24] I. Astashova, On asymptotic classification of solutions to fourth-order differential equations with singular power nonlinearity Mathematical Modeling and Analysis. 2016. 21(4). 502–521.

[25] I. Astashova, On asymptotic classification of solutions to nonlinear regular and singular thirdand fourth-order differential equations with power nonlinearity, Differential and Difference Equations with Applications. Springer Proceedings in Mathematics & Statistics. ISBN 978-3- 319-32857-7. New York, N.Y., United States, 2016. P. 191–204. ISBN 978-3-319-32855-3

[26] I. V. Astashova, V. V. Rogachev, On the number of zeros of oscillating solutions of the third- and fourth-order equations with power nonlinearities, Journal of Mathematical Sciences. 2015. 2056. P. 733–748.

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WSEAS Transactions on Mathematics, ISSN / E-ISSN: 1109-2769 / 2224-2880, Volume 16, 2017, Art. #5, pp. 39-47


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