Im only in second semester calculus and my friend keeps on babbling about Tensor Calculus and how only a few people know how to do it in the world. I highly doubt that only a few people in the world know how to do this because there are plenty of math graduates out there, as well as professors...
i have been doing fourier, differential equations, and advanced calculus and then i saw differential geometry in a book...since teh book only covered advanced calculus, it only introduced diff. geometry...can anyone show and tell me where on the web there is a tutorial for differential geometry?