中文

小于 1 蕴含为零

泛函分析 2016-09-29 v2

摘要

本文证明,由估计式 supt0C(t)cos(at)I<1\sup_{t \geq 0}\|C(t) - \cos(at)I\| <1 可得出结论:C(t)C(t) 等于 cos(at)I\cos(at) I。此处 (C(t))t0\left(C(t)\right)_{t \geq 0} 是 Banach 空间上的强连续余弦族。

关键词

引用

@article{arxiv.1310.6202,
  title  = {Less than one implies zero},
  author = {Felix Schwenninger and Hans Zwart},
  journal= {arXiv preprint arXiv:1310.6202},
  year   = {2016}
}

备注

Corrected the previous version (in particular, a mistake in Lemma 2.1), streamlined and added recent references (see Introduction). 6 pages