The inverse stability of functional equations is considered, i.e. when the function, approximating a solution of the equation, is an approximate solution of this equation.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-bc99-0-8,
author = {Zenon Moszner},
title = {On the inverse stability of functional equations},
journal = {Banach Center Publications},
volume = {99},
year = {2013},
pages = {111-121},
zbl = {1281.39042},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-bc99-0-8}
}
Zenon Moszner. On the inverse stability of functional equations. Banach Center Publications, Tome 99 (2013) pp. 111-121. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-bc99-0-8/