Suppose you could obtain $P:=AA^+\in\mathbb{R}^{N\times N}$ experimentally, where $A^+$ is the Moore-Penrose Pseudoinverse. Is there a way to obtain $A^+$?
We know that rank$(A)=N-1$.
2026-03-27 00:59:13.1774573153
Is there a way to obtain $A^+$ if we know $A$ and $P=AA^+$
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