Electron. J. Diff. Equ., Vol. 2010(2010), No. 87, pp. 1-7.

Growth and oscillation of differential polynomials in the unit disc

Abdallah El Farissi, Benharrat Belaidi, Zinelaabidine Latreuch

Absrtract: In this article, we give sufficiently conditions for the solutions and the differential polynomials generated by second-order differential equations to have the same properties of growth and oscillation. Also answer to the question posed by Cao [6] for the second-order linear differential equations in the unit disc.

Submitted March 24, 2010. Published June 21, 2010.
Math Subject Classifications: 34M10, 30D35.
Key Words: Linear differential equations; analytic solutions; hyper order; exponent of convergence; hyper exponent of convergence.

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Abdallah El Farissi
Department of Mathematics
Laboratory of Pure and Applied Mathematics
University of Mostaganem, B. P. 227 Mostaganem, Algeria
email: elfarissi.abdallah@yahoo.fr
Benharrat Belaïdi
Department of Mathematics
Laboratory of Pure and Applied Mathematics
University of Mostaganem, B. P. 227 Mostaganem, Algeria
email: belaidibenharrat@yahoo.fr
Zinelaâbidine Latreuch
Department of Mathematics
Laboratory of Pure and Applied Mathematics
University of Mostaganem, B. P. 227 Mostaganem, Algeria
email: z.latreuch@gmail.com

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