We give a lower bound for the minimal displacement characteristic in Hilbert spaces.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-sm165-3-2,
author = {Emanuele Casini},
title = {Minimal displacement in Hilbert spaces},
journal = {Studia Mathematica},
volume = {162},
year = {2004},
pages = {215-219},
zbl = {1073.47521},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm165-3-2}
}
Emanuele Casini. Minimal displacement in Hilbert spaces. Studia Mathematica, Tome 162 (2004) pp. 215-219. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm165-3-2/