# [Numpy-discussion] sum of outer products

Hagen Fürstenau hagen@zhuliguan....
Mon Sep 20 16:34:58 CDT 2010

Hi,

I don't know if I'm overlooking something obvious, but is there a
compact way of computing the 3-array

X_{ijk} = \sum_{l} A_{il}*B_{jl}*C_{kl}

out of the 2-arrays A, B, and C?

- Hagen