We shall prove that the sphere of any infinite-dimensional normed space is invertible. 我们将致力于证明任何无穷维赋范空间的球面皆为可逆。
In this paper, we study the connectedness of super efficient solution sets for set-valued mapping vector optimization in normed linear space. 本文研究赋范线性空间中集值映射向量优化问题超有效解集的连通性问题。
