topological space فضای ِ توپوشناختی fazâ-ye topošenâxti
*Fr.: espace topologique*
A set *X* together with a collection of open subsets *T* that satisfies
the three following conditions: 1) The empty set Ø and *X* are in *T*.
2) The intersection of a finite number of sets in *T* is also in *T*.
3) The union of an arbitrary number of sets in *T* is also in *T*. → *topological*; → *space*. |