Timeline for Are there any techniques that can be used in the case when a Neumann series doesn't converge?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Oct 26, 2020 at 10:23 | vote | accept | ManUtdBloke | ||
| Mar 4, 2020 at 11:15 | answer | added | Jochen Glueck | timeline score: 4 | |
| Mar 1, 2020 at 13:00 | comment | added | ManUtdBloke | @KeithMcClary I have seen Pade approximants mentioned in the context of accelerating the convergence a Neumann series but I didn't know they can also work when a Neumann series doesn't converge. So I'll take a look into this, although I am dealing with non-symmetric operators so maybe it can't be applied to my case. | |
| Mar 1, 2020 at 12:53 | history | edited | ManUtdBloke | CC BY-SA 4.0 |
edited body
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| Mar 1, 2020 at 5:52 | answer | added | Robert Israel | timeline score: 4 | |
| Feb 29, 2020 at 22:48 | comment | added | Keith McClary | For symmetric operators Hilbert Space and the Padé Approximant, non-paywalled Google Books preview starting p.197 . Not a "series representation". | |
| Feb 29, 2020 at 20:09 | comment | added | Yemon Choi | BTW you have $I+A$ at one point and $I-A$ on the next line; I assume one of these is a typo? | |
| Feb 29, 2020 at 20:08 | comment | added | Yemon Choi | You would still win if the spectral radius of $A$ is less than $1$. If the spectral radius of $A$ is $\geq 1$ then $I$ might be in the spectrum of $A$ and then there is no hope of defining $(I-A)^{-1}$ as a bounded operator | |
| Feb 29, 2020 at 16:24 | history | edited | YCor | CC BY-SA 4.0 |
fixed title, minor formatting
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| Feb 29, 2020 at 12:41 | history | asked | ManUtdBloke | CC BY-SA 4.0 |