Closed Ball

The closed ball with center and radius is defined by

$B_r(x)={y:|y-x|<=r}.$

See also

Ball, Closed Disk, Open Ball

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References

Croft, H. T.; Falconer, K. J.; and Guy, R. K. Unsolved Problems in Geometry. New York: Springer-Verlag, p. 1, 1991.

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Cite this as:

Weisstein, Eric W. "Closed Ball." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ClosedBall.html

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