Absolute Value
The absolute value of a Real Number 
is denoted 
and given by
where Sgn is the sign function.
The same notation is used to denote the Modulus of a Complex Number 
,
, a p-adic Number absolute value, or a general Valuation. TheNorm of a Vector 
is also denoted 
, although 
is more commonly used.
Other Notations similar to the absolute value are the Floor Function 
,Nint function 
, and Ceiling Function 
.
- Napier's Analogies
- Napier's Bones
- Napier's Constant
- Napier's Inequality
- Napkin Ring
- Napoleon Points
- Napoleon's Problem
- Napoleon's Theorem
- Napoleon Triangles
- Nappe
- Narcissistic Number
- Nash Equilibrium
- Nash's Theorem
- Nasik Square
- Nasty Knot
- Natural Density
- Natural Equation
- Natural Independence Phenomenon
- Natural Invariant
- Natural Logarithm
- Natural Measure
- Natural Norm
- Natural Number
- Naught
- Navigation Problem