# Math Help - use kronecker product to prove GLS reduces to OLS

1. ## use kronecker product to prove GLS reduces to OLS

Hi guys:

I am sure if you understand the topic then you have seen this question somewhere in econometrics exam.

How to prove that using kronecker product rule that GLS reduces to OLS?

2. ## Re: use kronecker product to prove GLS reduces to OLS

Hey noblewhale.

I take it OLS means Ordinary Least Squares but what does GLS refer to?