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Encyclopedia > Total preorder

In the mathematical area of order theory, a total preorder over a set X is a preorder ≤ over X that is total; that is, for all a and b in X, it holds that ab or ba.


The difference between a total preorder and a total order is that a total preorder (since it is only a preorder) is not required to be antisymmetric.


An example is (X, ≤) where X = {1, 2} and ab for all a and b in X.


  Results from FactBites:
 
total order: Information From Answers.com (603 words)
In mathematics, a total order or linear order on a set X is any binary relation on X that is antisymmetric, transitive, and total.
Notice that the totalness condition implies reflexivity, that is a ≤ a.
Thus a total order is also a partial order, that is, a binary relation which is reflexive, antisymmetric and transitive.
  More results at FactBites »


 

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