Endomorphism
A Surjective Morphism from an object to itself. In Ergodic Theory, let 
be a Set,
a Sigma Algebra on and 
a Probability Measure. A Map 
is calledan endomorphism or Measure-Preserving Transformation if
- 1.
is Surjective, - 2. is Measurable,
- 3.
for all 
.
An endomorphism is called Ergodic if it is true that 
Implies 
or 1, where 
.
- Sphenocorona
- Sphenoid
- Sphenomegacorona
- Sphere
- Sphere-Cylinder Intersection
- Sphere Embedding
- Sphere Eversion
- Sphere Geodesic
- Sphere Packing
- Sphere Point Picking
- Sphere-Sphere Intersection
- Sphere with Tunnel
- Spherical Bessel Differential Equation
- Spherical Bessel Function
- Spherical Bessel Function of the First Kind
- Spherical Bessel Function of the Second Kind
- Spherical Bessel Function of the Third Kind
- Spherical Cap
- Spherical Coordinates
- Spherical Design
- Spherical Excess
- Spherical Frustum
- Spherical Geometry
- Spherical Hankel Function of the First Kind
- Spherical Hankel Function of the Second Kind