[Insight-developers] itkPoint from a math perspective

[Paul Hughett]

Luis said:

> The Covariant vector is....

Thanks for the explanation!  Could you put this into the user's manual
somewhere?  It's too good an explanation to left to languish in our mail
archives.

A couple of follow-on questions:

1. I seem to recall that covariant vectors are somehow also associated
with differentiation.  Is this true and what is the connection?

2. Tensor analysis, as I recall it, makes a distinction between covariant
and contravariant tensors (or was it indices?).  Is there also such a thing
as a contravariant vector?


Paul Hughett