Abstract
The Lyapunov function V and its time derivative dot{V} are expressed in matrix form by x'Sx and x'Tx , respectively, where S and T contain elements which involve the state variables, and x' is the transpose of x . A given fourth-order nonlinear system is characterized by dot{x}=A(x)x , where A(x) contains nonlinear elements. Simanov's problem is extended to a fourth-order system whose nonlinearity is a constrained function of two state variables.

This publication has 2 references indexed in Scilit: