$\|(AA^\top)^{-1}\|=1/\sigma_{\min}(A^\top)^2$ (with Mathlib's conventions $0^{-1}=0$) · Prove2Me

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$\|(AA^\top)^{-1}\|=1/\sigma_{\min}(A^\top)^2$ (with Mathlib's conventions $0^{-1}=0$) · Prove2Me