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You want to start with: https://en.wikipedia.org/wiki/Covariance_and_contravariance_of_vectors https://en.wikipedia.org/wiki/Covariance_and_contravariance_...
by jacobolus 9y ago
You want to start with:
https://en.wikipedia.org/wiki/Covariance_and_contravariance_of_vectors https://en.wikipedia.org/wiki/Covariance_and_contravariance_...