[Python-ideas] Fwd: [RFC] draft PEP: Dedicated infix operators for matrix multiplication and matrix power

[Serhiy Storchaka]

14.03.14 03:59, Nathaniel Smith написав(ла):
> PEP: XXXX
> Title: Dedicated infix operators for matrix multiplication and matrix power

This is about matrix multiplication and matrix power. But what about 
matrix division? It is needed to distinguish elementwise division from 
left and right matrix divisions. And what about concatenation? Python 
lists and tuples use ``+`` for this, but NumPy arrayse use ``+`` for 
bitwise addition.

Matrix multiplication is only defined on 2d arrays (matrices). But why 
not on arbitrary tensors (except scalars)?