On the existence of subspace-diskcyclic C_{۰}-semigroups and some criteria

In this paper,  we prove the existance of subspace-diskcyclic C_{۰}-semigroups   on any infinite-dimensional   separable Banach space.  We state that diskcyclic C_{۰}-semigroups are subspace-diskcyclic. Also, we establish some criteria for subspace-diskcyclic C_{۰}-semigroups. Most of these criteria  are based on non-empty relatively open sets  and some of them are based on dense sets.

کلیدواژه ها:

subspace-diskcyclicity ، diskcyclicity ، C_{۰}-semigroups