Gauss's Mean-Value Theorem
Let 
be an Analytic Function in 
. Then
for
.- Einstein Functions
- Einstein Summation
- Eisenstein Integer
- Eisenstein-Jacobi Integer
- Eisenstein Prime
- Eisenstein Series
- Eisenstein Unit
- Elastica
- Elation
- Elder's Theorem
- Election
- Electric Motor Curve
- Element
- Elementary Function
- Elementary Matrix
- Elementary Operation
- Elementary Symmetric Function
- Elements
- Elevator Paradox
- Elkies Point
- Ellipse
- Ellipse Caustic Curve
- Ellipse Envelope
- Ellipse Evolute
- Ellipse Involute