The quasiconcave was extended to the cone-quasiconcave, and the cone weak efficient solution set was still connected.
把拟凹推广到锥拟凹，证明了锥弱有效解集仍是连通的。
Systematically discusses the fundamental theorems of weak efficient solution, efficient solution and properly efficient solution for multiobjective fractional programming problems with set functions.
系统地讨论了集函数多目标分式规划的弱有效解、有效解和真有效解的基本定理。
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