General Sphere is Subspace of Closed Ball of Greater Dimension/Examples
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Examples of Use of General Sphere is Subspace of Closed Ball of Greater Dimension
Dimension $1$
Consider the closed ball $\map { {B_1}^-} 0$ in the real Euclidean space $\R^2$.
The$1$-sphere $S^1 = \closedint {-1} 1$ is a subspace of $\map { {B_1}^-} 0$.