Spherical Symmetry
Let 
and 
be constant Vectors. Define
Then the average of
over a spherically symmetric surface or volume is
since
over the sphere.- Planar Straight Line Graph
- Plancherel's Theorem
- Planck's Radiation Function
- Plane
- Plane Curve
- Plane Cutting
- Plane Division
- Plane-Filling Curve
- Plane-Filling Function
- Plane Geometry
- Plane Partition
- Plane Symmetry Groups
- Planted Planar Tree
- Plastic Constant
- Plat
- Plateau Curves
- Plateau's Laws
- Plateau's Problem
- Platonic Solid
- Plato's Number
- Platykurtic
- p-Layer
- Playfair's Axiom
- Plethysm
- Plot