The finite-time stability and the finite-time contractive stability of solutions for nonlinear fractional differential equations with bounded delay are investigated. The derivative of Lyapunov function along solutions...The finite-time stability and the finite-time contractive stability of solutions for nonlinear fractional differential equations with bounded delay are investigated. The derivative of Lyapunov function along solutions of the considered system is defined in terms of the Caputo fractional Dini derivative. Based on the Lyapunov-Razumikhin method, several sufficient criteria are established to guarantee the finite-time stability and the finite-time contractive stability of solutions for the related systems. An example is provided to illustrate the effectiveness of the obtained results.展开更多
In this paper, we give an upper estimate for the Clarke-Rockafellar directional derivatives of a function of the form f-g, where f, g are max-functions defined by locally Lipschitz but not necessarily differentiable f...In this paper, we give an upper estimate for the Clarke-Rockafellar directional derivatives of a function of the form f-g, where f, g are max-functions defined by locally Lipschitz but not necessarily differentiable functions on a closed convex set in a Euclidean space. As an application, we give a sufficient condition for f-g to have an error bound.展开更多
We will solve an open problem proposed by L.R. Goldberg in ref. [1] (open problem4), and will construct a Teichmuller differential for which there exists a degeneratingHamilton sequence.
基金Natural Science Foundation of Shanghai,China (No.19ZR1400500)。
文摘The finite-time stability and the finite-time contractive stability of solutions for nonlinear fractional differential equations with bounded delay are investigated. The derivative of Lyapunov function along solutions of the considered system is defined in terms of the Caputo fractional Dini derivative. Based on the Lyapunov-Razumikhin method, several sufficient criteria are established to guarantee the finite-time stability and the finite-time contractive stability of solutions for the related systems. An example is provided to illustrate the effectiveness of the obtained results.
基金Supported by the National Natural Science Foundation of China (No. 10801137)
文摘In this paper, we give an upper estimate for the Clarke-Rockafellar directional derivatives of a function of the form f-g, where f, g are max-functions defined by locally Lipschitz but not necessarily differentiable functions on a closed convex set in a Euclidean space. As an application, we give a sufficient condition for f-g to have an error bound.
文摘We will solve an open problem proposed by L.R. Goldberg in ref. [1] (open problem4), and will construct a Teichmuller differential for which there exists a degeneratingHamilton sequence.
