What is the meaning of Open_ball?
The set of all points in a metric space whose distance from a given point ("the open ball's center") is less than a given length ("the open ball's radius").
Source: wiktionary.orgSearch words containing
The set of all points in a metric space whose distance from a given point ("the open ball's center") is less than a given length ("the open ball's radius").
Source: wiktionary.orgSearch words containing