bio | website | |
---|---|---|
location | Pisa or Cincelli (Italy) | |
age | 27 | |
visits | member for | 4 years, 10 months |
seen | 20 hours ago | |
stats | profile views | 1,632 |
I'm a Phd student at Scuola Normale Superiore, Pisa.
Jul 2 |
awarded | Curious |
Mar 19 |
asked | Invertibility of Hankel operators? |
Mar 6 |
comment |
An inequality for Fourier transform
It seems to me that the inequality follows from Plancherel inequality and the identity $\widehat{(-\Delta)^{-\alpha}f}=|x|^{-2\alpha}\widehat{f}$. |
Jan 8 |
comment |
Better bound for Hardy-Littlewood maximal function
Testing your estimate on the characteristic of a ball, you see that when $\alpha\rightarrow+\infty$ you get a contradiction. |
Oct 23 |
awarded | Yearling |
Oct 15 |
comment |
Elliptic Harnack inequality for 1D Schrodinger operator?
A Harnack inequality with constants depending on the radius may be found in Aizenman, M.; Simon, B. Brownian motion and Harnack inequality for Schrödinger operators. |
Oct 8 |
awarded | Favorite Question |
Oct 1 |
awarded | Caucus |
Aug 5 |
comment |
Converse to Chow's theorem in sub-riemannian geometry
Thank you, Dario! |
Jul 18 |
accepted | Converse to Chow's theorem in sub-riemannian geometry |
Jul 17 |
comment |
Heat Equation on $[0,T] \times \mathbb{R}^n$
Duhamel formula could be the tool to prove such a result, by a contraction mapping argument. wiki.math.toronto.edu/DispersiveWiki/index.php/… |
Jul 17 |
comment |
Converse to Chow's theorem in sub-riemannian geometry
Thank you anyway! |
Jul 14 |
comment |
Converse to Chow's theorem in sub-riemannian geometry
Thank you very much! Unfortunately there are many "linguistic" differences between Control Theory texts and Subriemannian Geometry ones that may make not very appropriate to quote Jurdjevic book while discussing subriemannian geometry. Do you know of any "subriemannian" reference for the result I look for? Thank you very much! |
Jul 12 |
revised |
Converse to Chow's theorem in sub-riemannian geometry
added reference-request |
Jul 12 |
asked | Converse to Chow's theorem in sub-riemannian geometry |
Jun 25 |
awarded | Revival |
Jun 14 |
comment |
Uncertainty principle on finite groups
You may know this, but Theorem 2 in arxiv.org/pdf/math/0608702v2.pdf shows that the kind of uncertainty principle you quoted holds for compact (in particular finite) groups, appropriately reworded. |
Jun 12 |
comment |
What is Kirillov's method good for?
I think the paper linked above by Peter Dalakov was incorporated (and expanded) in Kirillov's book Lectures on the Orbit Method, which you may already know. |
Jun 10 |
asked | Cutting a subset in many pieces with controlled perimeter |
Apr 10 |
answered | Does the Hardy-Ramanujan Asymptotic Formula Partition Sets or Integers? |