• 1. positive definite function: 正定函数
• 2. quadratic positive - definite function: 二次正定函数
• 3. Irreducible positive definite function: 不可分解正定函数

更多释义

• 1.Under the cases that the objective function is positive definite or positive semidefinite, the necessary and sufficient conditions to characterize global optimal solution are obtained.
  假定约束是可行、规范的，对于目标函数为正定或半正定的情形，得到了全局最优解的充要条件。
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• 2.The Control for chaotic synchronization is directly designed based on lyapunov's direct method by choosing a positive definite lyapunov function.
  选择一正定的李亚普诺夫函数，基于李亚普诺夫直接法求出混沌同步的控制量。
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