An almost lower semicontinuity for a set-valued mapping with image space being a topological vector space.
本文对像空间为一般拓扑向量空间的集值映射，给出了所谓几乎下半连续的概念；
2
Finally, under suitable assumptions, we obtain the upper semicontinuity and the lower semicontinuity of second-order adjacent derivatives for the weak perturbation maps.