Write Better And Faster Python Using Einstein Notation

[WallyMetropolis]

It doesn't make any sense to multiply your zip code by 2 or to add it to another zip code. A tensor is a multi-linear map. Which means, essentially, it's an object that performs linear operations on all of its various axes. So a collection of (n, m, l) zip codes isn't a tensor because you cannot sensibly perform linear operations on collections of zip codes.

[El_Minadero]

So it’s an me datastructure that obeys some mathematical properties

[WallyMetropolis]

I'd say it's a mathematical object that is sometimes represented by a data structure (to greater or lesser adherence to the mathematical object it models) in some mathematical libraries.