Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4613986 | Journal of Mathematical Analysis and Applications | 2017 | 7 Pages |
Abstract
Using a diffeomorphism between the unit sphere and a closed hyperplane of an infinite dimensional Banach space, we introduce the differentiation of a function defined on the unit sphere, and show that a continuous linear functional attains its norm if and only if it has a critical point on the unit sphere. Furthermore, we provide a strong version of the Bishop–Phelps–Bollobás theorem for a Lipschitz smooth Banach space.
Related Topics
Physical Sciences and Engineering
Mathematics
Analysis
Authors
Dong Hoon Cho, Yun Sung Choi,