Abstract
Let (X, f) be a dynamical system and its functional envelope, where f is continuous. We prove the stabilities of the functional envelope defined by for any . And we also obtain some results for the derivations of function spaces.
2000 Mathematics Subject Classification::
Notes
3. The first author was supported by the second stage of the Brain Korea 21 Project, The Development Project of Human Resources in Mathematics, KAIST in 2008.