We find the norm of the Hardy operator minus the identity acting on the cone of radially decreasing functions on minimal Lorentz spaces (restricted type estimates).
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-sm197-1-6,
author = {Javier Soria},
title = {Optimal bounds of restricted type for the Hardy operator minus the identity on the cone of radially decreasing functions},
journal = {Studia Mathematica},
volume = {196},
year = {2010},
pages = {69-79},
zbl = {1217.26036},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm197-1-6}
}
Javier Soria. Optimal bounds of restricted type for the Hardy operator minus the identity on the cone of radially decreasing functions. Studia Mathematica, Tome 196 (2010) pp. 69-79. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm197-1-6/