Denote by F the composition operator generated by a given function f: R --> R, acting on the space of absolutely continuous functions. In this paper we prove that the composition operator F maps the space AC[a,b] into itself if and only if f satisfies a local Lipschitz condition on R.
@article{urn:eudml:doc:42539, title = {On the Composition Operator in AC[a,b].}, journal = {Collectanea Mathematica}, volume = {42}, year = {1991}, pages = {237-243}, zbl = {0783.47045}, mrnumber = {MR1203182}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:42539} }
Merentes, Nelson. On the Composition Operator in AC[a,b].. Collectanea Mathematica, Tome 42 (1991) pp. 237-243. http://gdmltest.u-ga.fr/item/urn:eudml:doc:42539/