Difference between revisions of "Metric (analysis)"
m (moved Metric (set theory) to Metric (analysis): Set theory? Gimme a break ... (though if someone thought "topology" was better than "analysis," I wouldn't mind))
Revision as of 08:26, 8 August 2009
- Symmetry: for all points .
- Positivity: for all and if and only if .
- The triangle inequality: for all .
Together, the set and the metric form a metric space.
- For any set , the discrete metric and otherwise.
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