open ball

English

open ball (plural open balls)

(topology, mathematical analysis, restricted to metric spaces) 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").

单词	open ball
释义	open ball English Noun open ball (plural open balls) (topology, mathematical analysis, restricted to metric spaces) 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"). Holonyms open set
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