The Kronecker product function "kron" should return a matrix (instead of an array) at least for matrix inputs (Trac #71) · Issue #555 · numpy/numpy · GitHub
Implementing Kronecker Product Decomposition with NumPy | by Xinyu Chen (陈新宇) | Medium
arrays - Multiplying A Matrix By A String - Stack Overflow
Do(n't) Use This Code—Expert Training & Consulting on Twitter: "#AdventOfCode Day #11, Parts #1 & #2 Summary: · straightforward with NumPy (e.g., `collections.Counter` → `numpy.unique`; `set` → masking tricks) · use generator
NumPy: Compute the Kronecker product of two given mulitdimension arrays - w3resource