as or while the open -dimensional ball is or .

In Euclidean space

In Euclidean -space, an (open) -ball of radius and center is the set of all points of distance less than from . A closed -ball of radius is the set of all points of distance less than or equal to away from .

In Euclidean -space, every ball is bounded by a hypersphere. The ball is a bounded interval when , is a disk

1.Previous
3.Next