# Difference between revisions of "Strict inequality"

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− | A strict [[inequality]] is an inequality where the [[inequality symbol]] is either <math> > </math> (greater than) or <math> < </math> (less than). | + | A strict [[inequality]] is an inequality where the [[inequality symbol]] is either <math> > </math> (greater than) or <math> < </math> (less than). That is, a strict inequality is an inequality which has no [[equality condition]]s. |

An example of a well-known strict inequality is the [[Triangle Inequality]], which states that, in a [[nondegenerate]] triangle <math>ABC</math>, the following relation holds: | An example of a well-known strict inequality is the [[Triangle Inequality]], which states that, in a [[nondegenerate]] triangle <math>ABC</math>, the following relation holds: | ||

<center><math> AB+BC>AC </math></center> | <center><math> AB+BC>AC </math></center> | ||

+ | |||

+ | A non-example is the [[Trivial Inequality]] which states that if <math>x</math> is a [[real number]] then <math>x^2 \geq 0</math>. This inequality is not strict because it has an equality case: when <math>x = 0</math>, <math>x^2 = 0</math>. |

## Revision as of 09:41, 14 August 2006

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A strict inequality is an inequality where the inequality symbol is either (greater than) or (less than). That is, a strict inequality is an inequality which has no equality conditions.

An example of a well-known strict inequality is the Triangle Inequality, which states that, in a nondegenerate triangle , the following relation holds:

A non-example is the Trivial Inequality which states that if is a real number then . This inequality is not strict because it has an equality case: when , .