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Jul13-06, 08:55 PM
Sci Advisor
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mathwonk's Avatar
P: 9,499
i guess if you can argue that the metric is somehow natural then a vector that uses the metric t be viewed as a covector is somehow naturllly a covector.

but if you have ametric there is essentillyno difference between a vector and a covector. but metrics are not so natural.