Timeline for How to prove this estimate involving the Stein Derivative?
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 19, 2022 at 21:50 | comment | added | Student | Aah, of course. Thanks! | |
| Jan 19, 2022 at 21:09 | comment | added | Fedor Petrov | $|f(x)g(x)-f(y)g(y)|\leqslant A(x,y)+B(x,y)$, where $A=|f(x)|\cdot |g(x)-g(y)|$, $B=|g(y)|\cdot |f(x)-f(y)|$. Now use the triange inequality bound $\|A\|+\|B\|\geqslant \|A+B\|$, where the norm is taken in the weighted $L^2(\mathbb{R}^n\times \mathbb{R}^n,1/|x-y|^{n+2s})$. | |
| Jan 19, 2022 at 20:54 | history | asked | Student | CC BY-SA 4.0 |