An oscillation theorem for a class of second-order forced neutral delay differential equations with mixed nonlinearities

Autor: Jichao Zhong, Shuliang Zou, Zigen Ouyang
Rok vydání: 2011
Předmět:
Zdroj: Applied Mathematics Letters. 24:1449-1454
ISSN: 0893-9659
DOI: 10.1016/j.aml.2011.03.030
Popis: A class of second-order forced neutral delay differential equation with mixed nonlinearities ( r ( t ) | x ′ ( t ) + p x ′ ( t − σ ) | α − 1 ( x ′ ( t ) + p x ′ ( t − σ ) ) ) ′ + q 0 ( t ) | x ( τ 0 ( t ) ) | α − 1 x ( τ 0 ( t ) ) + ∑ i = 1 n q i ( t ) | x ( τ i ( t ) ) | β i − 1 x ( τ i ( t ) ) = e ( t ) sgn ( x ( t ) ) is investigated in this paper. Using a new method, we obtain some new sufficient conditions for the oscillation of the above equation, and some known oscillation criteria have been extended.
Databáze: OpenAIRE