I want to show that if $\|A' - B'\|\geq \|A - B\|$ as soon as $A' \succeq A$ and $B' \preceq B$. Is this true?
I could show it if I could show that $\|C + D\| \geq \|C\|$ when $D$ is positive definite.
2026-03-24 20:32:01.1774384321
If I add a positive definite matrix, do I increase the norm?
54 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in LINEAR-ALGEBRA
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