Acta mathematica scientia,Series A ›› 2014, Vol. 34 ›› Issue (2): 393-408.

• Articles • Previous Articles     Next Articles

Oscillation Criteria for Second-Order Dynamic Equations with Positive and Negative Coefficients and Damping on Time Scales

 YANG Jia-Shan   

  1. Department of Mathematics and Physics, Wuzhou University, Guangxi Wuzhou 543002
  • Received:2012-05-28 Revised:2013-07-26 Online:2014-04-25 Published:2014-04-25
  • Supported by:

    湖南省自然科学基金项目(12JJ6006)、湖南省科技厅基金项目(2012FJ3107)、广西教育厅科研项目(2013YB223)和国家自然科学基金项目(11071222)资助.

Abstract:

The oscillation for certain second-order nonlinear variable delay dynamic equations with positive and negative coefficients and damping and nonlinear neutral on time scales is discussed. By using the time scales theory and the generalized Riccati transformation and the inequality technique, we establish some new oscillation criteria for the inequations. Our results extend and improve some known results, but also unify the oscillation of second-order nonlinear delay differential equations with damping and second-order nonlinear delay difference equations with damping.

Key words: Oscillation, Dynamic equations, Time scales, Positive and negative coefficients, Damping, Nonlinear neutral

CLC Number: 

  • 34k11
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