Difference between revisions of "Euclidean metric"
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Latest revision as of 16:49, 28 March 2009
The Euclidean metric on 
is the standard metric on this space. The distance 
between two elements 
and 
is given by 
. It is straight-forward to show that this is symmetric, non-negative, and 0 if and only if 
. Showing that the triangle inequality holds true is somewhat more difficult, although it should be intuitively clear because it is properties of the Euclidean metric which motivate the definition of a metric.
Proof of the triangle inequality
See Also
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