what exactly are tensors and how do they work?

[zaphod]

mathematically speaking, how are they constructed and what kind of operations are performed on them that make them useful in describing the multi-dimensional universe in superstring theory?

[zaphod]

anybody? anybody?

 

[Perennial]

Tensor is essentially a mapping ... I'll probably confuse you less by providing you this one first :

 

http://vishnu.mth.uct.ac.za/omei/gr/chap3/frame3.html

[5614]

http://en.wikipedia.org/wiki/Tensors

 

is another good site on em

[zaphod]

thank you very much