In this note we study questions of redundancy concerning the functional equation f(h(x)+k(x)) = f(h(x))+f(k(x)), where h and k are given functions and f is the unknown function.
@article{urn:eudml:doc:38981,
title = {Condizioni di ridondanza per l'equazione funcionale f(k(t)+h(t)) = f(k(t))+f(h(t)).},
journal = {Stochastica},
volume = {11},
year = {1987},
pages = {93-105},
zbl = {0667.39002},
mrnumber = {MR0990879},
language = {it},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:38981}
}
Borelli Forti, Constanza. Condizioni di ridondanza per l'equazione funcionale f(k(t)+h(t)) = f(k(t))+f(h(t)).. Stochastica, Tome 11 (1987) pp. 93-105. http://gdmltest.u-ga.fr/item/urn:eudml:doc:38981/