Say I have a known matrix $\mathbf Q$, outer product of 2 vectors. What kind of matrix $\mathbf P$ do I need for the following statement to be true?
$$\mathbf Q = \mathbf P\cdot\mathbf Q^T\cdot\mathbf P^T$$
Thank you very much.
2026-04-03 03:19:59.1775186399
Requirements for $\mathbf Q = \mathbf P\cdot\mathbf Q^T\cdot\mathbf P^T$
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