摘要
从Banach空间X上C0半群T(t)的无穷小母元A的Yosida逼近Aλ出发,给出了两个充要条件,它们分别保证了半群T(t)对t>t0(t0≥0)的可微性.
Two full characterizations are given, in terms of the Yosida approximation of the infinitesimal generator A of a C-0 semigroup T(t) on a Banach space X, which assure respectively the differentiability of {T(t)} for t>t-0(t-0≥0).
出处
《华北工学院学报》
2004年第6期416-418,共3页
Journal of North China Institute of Technology
基金
华北工学院科学基金资助项目