Advances in Difference Equations
Volume 2006 (2006), Article ID 92923, 18 pages
doi:10.1155/ADE/2006/92923
Oscillatory mixed difference systems
José M. Ferreira1
and Sandra Pinelas2
1Departamento de Matemática, Instituto Superior Técnico, Avenida Rovisco Pais, Lisboa 1049-001, Portugal
2Departamento de Matemática, Universidade dos Açores, Rua Mãe de Deus, Ponta Delgada 9500-321, Portugal
Abstract
The aim of this paper is to discuss the oscillatory behavior of difference systems of mixed type. Several criteria for oscillations are obtained. Particular results are included in regard to scalar equations.