关于Semistrict Preinvex函数的几个性质

给出了semistrictpreinvex函数与invex函数之间的关系以及semistrictpreinvex函数与strictprein vex函数之间的关系.

Adaptive backstepping control for a class of semistrict feedback nonlinear systems using neural networks

This paper addresses a neural adaptive backstepping control with dynamic surface control technique for a class of semistrict feedback nonlinear systems with bounded external disturbances.Neural networks (NNs) are introduced as approximators for uncertain nonlinearities and the dynamic surface control (DSC) technique is involved to solve the so-called 'explosion of terms' problem.In addition,the NN is used to approximate the transformed unknown functions but not the original nonlinear functions to overcome the possible singularity problem.The stability of closed-loop system is proven by using Lyapunov function method,and adaptation laws of NN weights are derived from the stability analysis.Finally,a numeric simulation validates the results of theoretical analysis.

Semistrictly Convex Fuzzy Mappings

In this paper, a new class of fuzzy mappings called semistrictly convex fuzzy mappings is introduced and we present some properties of this kind of fuzzy mappings. In particular, we prove that a local minimum of a semistrictly convex fuzzy mapping is also a global minimum. We also discuss the relations among convexity, strict convexity and semistrict convexity of fuzzy mapping, and give several sufficient conditions for convexity and semistrict convexity.

半严格-G-半预不变凸性与最优化

提出了一类新的广义凸函数——半严格-G-半预不变凸函数,它是一类重要的广义凸函数,是半严格预不变凸函数和半严格-G-预不变凸函数的真推广.首先,用例子说明了半严格-G-半预不变凸函数的存在性,并给出例子说明它是与G-半预不变凸函数不同的一类函数;然后,给出了半严格-G-半预不变凸函数的几个基本性质;最后,讨论了半严格-G-半预不变凸函数分别在无约束和带不等式约束的非线性规划问题中的应用,得到了一些最优性结果,并举例验证所得结论的正确性.

半严格不变拟单调性

对文献[1]中的半严格拟单调映射进行推广,定义了半严格不变拟单调映射,并建立了半严格预拟不变凸函数与半严格不变拟单调映射之间的关系。

半严格-G-E-半预不变凸型函数及其在数学规划中的应用研究

提出了一类新的广义凸函数——半严格-G-E-半预不变凸函数,它是一类非常重要的广义凸函数,为半严格-G-半预不变凸函数与半严格-E-预不变凸函数的推广.首先给出例子,以说明半严格-G-E-半预不变凸函数的存在性及其与其他相关广义凸函数间的关系.然后讨论了半严格-G-E-半预不变凸函数的一些基本性质.最后,探究了半严格-G-E-半预不变凸型函数分别在无约束和有约束非线性规划问题中的重要应用,获得一系列最优性结论,并举例验证了所得结果的正确性.

半严格-(B,G)-半预不变凸规划的Wolfe对偶问题

讨论了与半严格-(B,G)-半预不变凸函数有关的可微多目标规划问题(TP),及其相对应的Wolfe型对偶问题(TW)之间可行解与弱Pareto解的关系。给出了目标函数和约束函数均为可微的半严格-(B,G)-半预不变凸函数的多目标规划问题的弱对偶、强对偶和逆对偶定理。其结果拓展了已有文献中与广义凸规划相关的Wolfe对偶结论,具有一般性。