Right, that's just sloppyness on my part typing that out. I haven't learned anything about inner products yet. Is there a way to look at this differently?
Homework Statement
If A is positive definite, show that ## A = C C^T ## where ## C ## has orthogonal columns.
The Attempt at a Solution
So, I've got the first part figured out. Because ## A ## is symmetric, an orthogonal matrix ## P ## exists such that ## P^TA P = D =...