Definition:Closed Ball/Metric Space/Radius
< Definition:Closed Ball | Metric Space(Redirected from Definition:Radius of Closed Ball)
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Definition
Let $M = \struct {A, d}$ be a metric space.
Let $a \in A$.
Let $\map { {B_\epsilon}^-} a$ be the closed $\epsilon$-ball of $a$.
The value $\epsilon$ is referred to as the radius of $\map { {B_\epsilon}^-} a$.
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