2.4.1 LaSalle Invariance Principle2.4.2 Average Decrement of the V(x) Function2.4.3 Vector Lyapunov Function2.4.4 Higher-Order Derivatives of a Lyapunov Function Candidate2.4.5 Stability Analysis of Nonlinear Homogeneous Systems2.4.5.1 Homogeneity2.4.5.2 Application of Higher-Order Derivatives of Lyapunov Functions