bio | website | perso.ens-lyon.fr/… |
---|---|---|
location | Lyon, France | |
age | 37 | |
visits | member for | 3 years, 11 months |
seen | Apr 11 at 7:03 | |
stats | profile views | 2,759 |
I am a number theorist working in Lyon (France).
May 8 |
revised |
Where to find Asterisque online?
added 153 characters in body |
May 8 |
answered | Where to find Asterisque online? |
Apr 30 |
awarded | Yearling |
Mar 17 |
comment |
What are p-adic period rings?
These are very good examples! Another example is that these rings of periods can be used to define the $H^1_f$ groups "at p". |
Mar 14 |
comment |
are the smooth vectors of a Frechet space dense?
Of course, this all depends on what you precisely mean by "smooth". It's a theorem of Schneider and Teitelbaum that if you have a unitary irreducible representation of a p-adic Lie group on a p-adic Banach space, then the locally analytic vectors are dense. |
Mar 14 |
answered | are the smooth vectors of a Frechet space dense? |
Mar 1 |
comment |
What is the first interesting theorem in (insert subject here)?
@Marcos : "I don't understand why he didn't prove it generally". Presumably because the definition of a group was only given in the mid-19th century. |
Mar 1 |
awarded | Nice Answer |
Feb 29 |
comment |
What is the “positive part” of the unit ball in $M_n(R)$ ?
The answer for $n=3$ is given in $\S 4.1$ of arxiv.org/abs/0911.5436. In $\S 4.4$ of ibid, there's a discussion of some properties of the convex hull of $SO(n)$ for larger $n$. |
Feb 27 |
comment |
Proof that the Pontryagin dual of a topological group is a topological group
Take a look at Lefschetz' book "Algebraic topology", the beginning has a lot of detailed background on topological groups and Pontryagin duality. It's a little old fashioned, but I found it very useful. |
Feb 10 |
comment |
What is the name for a finite-group representation that is the sum of all the irreducibles (once)?
"It should also be the socle of the regular representation" -> Of course, this is a silly comment, it is not the socle! |
Feb 8 |
comment |
What is the name for a finite-group representation that is the sum of all the irreducibles (once)?
It should also be the socle of the regular representation. |
Jan 3 |
awarded | Enlightened |
Jan 3 |
awarded | Nice Answer |
Dec 20 |
answered | Can a p-adic representation and its twist by a non-crystalline character both have nontrivial $D_{cris}$? |
Dec 16 |
comment |
Titles composed entirely of math symbols
I wanted to publish a paper called "B-pairs and (φ,Γ)-modules" but the editors made me change it on the ground that they did not want too many math symbols in a title. |
Dec 7 |
accepted | Banach-Mazur applied to a Hilbert space |
Dec 6 |
comment |
Banach-Mazur applied to a Hilbert space
Thank you! I'll try to convince myself why this works. |
Dec 6 |
comment |
Banach-Mazur applied to a Hilbert space
For some reason, it's much easier to realize $\ell^1(R)$ as a subspace of $C^0([0;1],R)$. |
Dec 6 |
comment |
Banach-Mazur applied to a Hilbert space
Thank you! I was hoping for an easier answer, but of course now that I think about it, a sequence of functions which form a Hilbert basis really amounts to the coordinates of a continuous surjective map to the weak unit ball, so the answer is bound to be complicated. |