International Journal of Mathematics and Mathematical Sciences
Volume 18 (1995), Issue 2, Pages 273-278
doi:10.1155/S0161171295000330
  
     
          
          Stability of nonlinear systems under constantly acting perturbations
          
            Xinzhi Liu1
             and S. Sivasundaram2
          
          1Department of Applied Mathematics, University of Waterloo, Ontario, Waterloo N2L 3G1, Canada
          2Department of Mathematics and Physical Sciences, Embry-Riddle Aeronautical University, Daytoha Beacl 32114, FL, USA
          
          Abstract
In this paper, we investigate total stability, attractivity and uniform stability in terms of two measures of nonlinear differential systems under constant perturbations. Some sufficient conditions are obtained using Lyapunov's direct method. An example is also worked out.