Timeline for Representation theorem for matrices (reference request)
Current License: CC BY-SA 4.0
3 events
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| Feb 19, 2020 at 13:01 | comment | added | Denis Serre | @JochenGlueck. It deserves to be more known. This property is equivalent to saying that the numerical radius is a norm over ${\bf M}_n({\mathbb C})$. Even if a matrix has real entries, it is crucial to compute its numerical radius from complex vectors, not only real ones ! | |
| Feb 19, 2020 at 12:50 | comment | added | Jochen Glueck | Thank you for your answer! If I could, I would give you a second upvote for "the superiority of the complex numbers over the real ones!" | |
| Feb 19, 2020 at 9:14 | history | answered | Denis Serre | CC BY-SA 4.0 |