Absolute Square
Also known as the squared Norm. The absolute square of a Complex Number 
is written 
and isdefined as
 | (1) |
denotes the Complex Conjugate of . For a Real Number, (1) simplifies to | (2) |
, then the absolute square can be written | (3) |
An important identity involving the absolute square is given by
 |  |  | |
|  | ||
|  | (4) |
If
, then (4) becomes | |  | |
|  | ||
|  | ||
|  | (5) |
If
, and 
, then | (6) |
 | |  | |
|  | ||
|  | ||
|  | (7) |
- Jacobian Curve
- Jacobian Determinant
- Jacobi-Anger Expansion
- Jacobian Group
- Jacobi Differential Equation
- Jacobi Differential Equation (Calculus of Variations)
- Jacobi Elliptic Functions
- Jacobi Function of the First Kind
- Jacobi Function of the Second Kind
- Jacobi-Gauss Quadrature
- Jacobi Identities
- Jacobi Matrix
- Jacobi Method
- Jacobi Polynomial
- Jacobi Quadrature
- Jacobi Rotation Matrix
- Jacobi's Curvature Theorem
- Jacobi's Determinant Identity
- Jacobi's Imaginary Transformation
- Jacobi's Theorem
- Jacobi Symbol
- Jacobi Tensor
- Jacobi Theta Function
- Jacobi Transformation
- Jacobi Triple Product