Ball
The 
-ball, denoted 
, is the interior of a Sphere 
, and sometimes also called the-Disk. (Although physicists often use the term ``Sphere'' to mean the solid ball, mathematiciansdefinitely do not!) Let 
denote the volume of an -D ball of Radius 
. Then
where
is the Erf function.See also Alexander's Horned Sphere, Banach-Tarski Paradox,Bing's Theorem, Bishop's Inequality, Bounded,Disk, Hypersphere, Sphere, Wild Point
References
Freden, E. Problem 10207. ``Summing a Series of Volumes.'' Amer. Math. Monthly 100, 882, 1993.
- Mordell-Weil Theorem
- Morera's Theorem
- Morgado Identity
- Morgan-Voyce Polynomial
- Morley Centers
- Morley's Formula
- Morley's Theorem
- Morley's Triangle
- Morphism
- Morrie's Law
- Morse Inequalities
- Morse Theory
- Morse-Thue Sequence
- Mortal
- Mortality Problem
- Morton-Franks-Williams Inequality
- Mosaic
- Moser
- Moser's Circle Problem
- Moss's Egg
- Motzkin Number
- Moufang Plane
- Mousetrap
- Mouth
- Moving Average