Timeline for When is a symmetric block Toeplitz matrix invertible?
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
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| Mar 29 at 17:20 | comment | added | Nathaniel Johnston | @Derek - $Q_0$ being positive definite (and hence invertible) does not imply that $Q$ is invertible. For example, suppose $Q_0$ is $1 \times 1$ and equal to the scalar $1$, and $Q$ is the $2\times 2$ all-ones matrix. The inequality Q > Q0+Q0+...Q0 is not true in general. | |
| Mar 29 at 15:35 | history | edited | YCor | CC BY-SA 4.0 |
removed capitals from title
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| S Mar 29 at 14:03 | review | First questions | |||
| Mar 29 at 17:22 | |||||
| S Mar 29 at 14:03 | history | asked | Benjamin Tennyson | CC BY-SA 4.0 |