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 
.
- Elongated Triangular Orthobicupola
- Elongated Triangular Pyramid
- Elsasser Function
- Wilson's Primality Test
- Wilson's Theorem
- Wilson's Theorem Corollary
- Wilson's Theorem (Gauss's Generalization)
- Winding Number (Contour)
- Winding Number (Map)
- Windmill
- Window Function
- Winkler Conditions
- Winograd Transform
- Wirtinger's Inequality
- Wirtinger-Sobolev Isoperimetric Constants
- Witch of Agnesi
- Witness
- Wittenbauer's Parallelogram
- Wittenbauer's Theorem
- Witten's Equations
- Wolstenholme's Theorem
- Woodall Number
- Woodbury Formula
- Word
- World Line