Timeline for On which subspace $W\subset C^{\infty}[0,1]$ is $(Df)(x)=xf'(x)$ a bounded operator provided all functions in $W$ are flat functions?
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| Mar 10, 2023 at 17:09 | comment | added | Ali Taghavi | Thank you and my (prevciously) +1. BTW "Entire function of ln(x)" This remind me of the concept of "Dulac series" in the investigation of the finteness part of the Hilbert 16th problem | |
| Jan 18, 2022 at 18:29 | history | answered | Michael Renardy | CC BY-SA 4.0 |