Talk:Tensor contraction

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[edit] Abstract Indices

I think it's better to avoid using four-dimensional (or any specific dimension) tensors since this is often against the modern use of tensors (the abstract index concept of tensors). --Freiddie 22:00, 10 April 2007 (UTC)

[edit] Major rewrite

In the spirit of "be bold", I did a lot of work on this article, moving stuff around and rewriting a lot. In particular, I took out all of the 0...3 stuff that is specific to physics, and I put the abstract definition first. I also removed a lot of redundancy; e.g. the (1,1) case was discussed in about 4 different ways previously. Please respond here if you have issues with the rewrite (which is still a work in progress). Thanks -- Spireguy (talk) 19:43, 6 March 2008 (UTC)