Recent content by Symmetry

Hi LTK, You can look at the proof at http://www.vttoth.com/BELL/BELL.htm and I think the articles at http://arxiv.org/abs/hep-th/9404178 & http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v409/n6822/full/409791a0_r.html are useful for you. See you soon

I have a little question. I hope someone can help me. When we learn the theory of relativity and its formalism, we'll meet concepts : covariant and contravariant, such as covariant vector, covariant tensor... I wonder that why we need to use the concepts ? What are advantages of them ? I...

Someone helps me ! I'm looking for where I can download free e-print about Tensor Calculus and Density Functional Theory . I want to teach myself. Thank you very much .