A matrix is better represented as a nested list of lists: ((1 2 3)(4 5 6)(6 7 8)) Of course you ignore that representing a tensor of rank higher than 2 is

A matrix is better represented as a nested list of lists: ((1 2 3)(4 5 6)(6 7 8)) Of course you ignore that representing a tensor of rank higher than 2 is just as difficult in 2d as a matrix is in 1d.