title: Absolute number
text: # Absolute number
  
  Absolute number may refer to:
  
  ## Mathematics
  
  * Absolute value, the non-negative value of a real number without regard to its sign
  * Absolute error, the absolute value of an approximation error in some data
  * Absolute difference, the absolute value of the difference of two real numbers
  * Absolute pseudoprime, a class of pseudoprimes that come from Fermat's little theorem
  * Absolute scale, system of measurement that begins at a zero point and progresses in only one direction
  