On the subject of 2x2 matrices.

2026-10-14 16:53:02 -04:00
parent ab63a0ff1d
commit df08e24cd4
6 changed files with 397 additions and 258 deletions
@@ -73,7 +73,7 @@ The following is a slight generalisation of one form of the above example, but s
        \normn{\phi_n(1_{M_n(A)})}_{M_n(B)}^{-1} &\le \phi_n(1_{M_n(A)})^{-1} 
    \end{align*}
    
-    By the \hyperref[Schur complement condition]{lemma:schur-complement-positive}, 
+    By the \hyperref[Schur complement condition]{proposition:schur-complement-positive}, 
    \begin{align*}
    \phi_n(1_{M_n(A)}) &\ge \phi_n(T)\phi_n(1_{M_n(A)})^{-1}\phi_n(T)^* \\
    &\ge \normn{\phi_n(1_{M_n(A)})}_{M_n(B)}^{-1}\phi_n(T)\phi_n(T)^* \\