Less than one implies zero
Functional Analysis
2016-09-29 v2
Abstract
In this paper we show that from the estimate we can conclude that equals . Here is a strongly continuous cosine family on a Banach space.
Cite
@article{arxiv.1310.6202,
title = {Less than one implies zero},
author = {Felix Schwenninger and Hans Zwart},
journal= {arXiv preprint arXiv:1310.6202},
year = {2016}
}
Comments
Corrected the previous version (in particular, a mistake in Lemma 2.1), streamlined and added recent references (see Introduction). 6 pages