Spherical Symmetry
Let 
and 
be constant Vectors. Define
Then the average of
over a spherically symmetric surface or volume is
since
over the sphere.- Zonohedron
- Zonotype
- Zorn's Lemma
- z-Score
- Zsigmondy Theorem
- Z-Transform
- z-Transform
- z-Transform (Population)
- Embeddable Knot
- Embedding
- Empty Set
- e-Multiperfect Number
- Enantiomer
- Enantiomorph
- Encoding
- Endogenous Variable
- Endomorphism
- Endraß Octic
- Energy
- En-Function
- Engel's Theorem
- Enneacontagon
- Enneacontahedron
- Enneadecagon
- Enneagon