Difference between revisions of "Metric space"
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Revision as of 17:54, 23 September 2006
A metric space is a pair, 
of a set 
and a metric 
. The metric 
represents a distance function between pairs of points of , and we require it to obey symmetry (
), positivity (
and 
if and only if 
) and the triangle inequality (
for all points 
).
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