7,555 reputation
12755
bio website perso-math.univ-mlv.fr/users/…
location Paris, France
age 35
visits member for 5 years, 2 months
seen 7 hours ago

I am a teacher and researcher at Université Paris-Est Créteil.


9h
comment Maximizing entropy under constraints
Thanks for your detailed answer; I must say that a quick look at the references you mention did not enable me to find what I looked for: I found interpretation in terms of multifractal spectra of such maximization problems, but not the description of how a maximizing (Gibbs) measure can be found. But you warned about the fact that these are implicit, so I guess I just need to take a more careful look.
1d
comment Maximizing entropy under constraints
@AnthonyQuas: the pointer to Christian Wolf and Tamara Kucherenko is so good that it could be made an answer; it seems after a quick look that their work does contain this application of our work. Thanks!
1d
revised Simultaneous approximation of different functions in $L^2(\mu)$ and Hölder space
Corrected my guess to a less obviously flase one.
1d
comment Simultaneous approximation of different functions in $L^2(\mu)$ and Hölder space
@ChristianRemling: you are of course right. I will edit my guess.
1d
asked Maximizing entropy under constraints
1d
comment Simultaneous approximation of different functions in $L^2(\mu)$ and Hölder space
@ChristianRemling: sorry, the question had a mistake: the first convergence is about the derivative $\varphi_n'$.
1d
revised Simultaneous approximation of different functions in $L^2(\mu)$ and Hölder space
Corrected $(*)$
1d
asked Simultaneous approximation of different functions in $L^2(\mu)$ and Hölder space
1d
comment cobordism and smoth-manifold
Your question does not has a question. If you are asking whether the last sentence is implied by the previous ones, then it looks like a standard exercise about manifolds and probably not a good fit for MO.
May
22
revised How to find an ODE with prescribed terminal values?
added 111 characters in body
May
22
answered How to find an ODE with prescribed terminal values?
May
22
revised How to find an ODE with prescribed terminal values?
Copy-pasted the improved version from math.SE where it will probably do not get the attention by experts it deserves.
May
19
awarded  Revival
May
18
answered Diffusion on a semi-Riemannian manifold?
May
18
comment A variation on the local Günther inequality
Let us continue this discussion in chat.
May
18
comment A variation on the local Günther inequality
@JonMarkPerry: yes, I am sure that I don't see your point, and that the very classical properties of non-positively curved manifolds stated on wikipedia (which does not even mentions the classical Günther inequality) do not answer my question. Now, if you claim to have a solution, you are very welcome to propose it and I would be more than happy to give the bounty if it stands right. But throwing obvious facts without apparent relation to the question is useless.
May
18
comment A variation on the local Günther inequality
@JonMarkPerry: I sure know that cosh is an antiderivative of sinh, and I don't quite see your points. This question lies quite beyond the content of wikipedia.
May
17
comment A variation on the local Günther inequality
@BS.: this paper looks interesting; it might be possible to use it to reduce the matricial problem to a scalar problem, which is basically the case we know how to handle. Otal's paper only works with one derivative though, so it will need some work to see how it goes.
May
15
comment Modern Mathematical Achievements Accessible to Undergraduates
It seems pretty ambitious to me: I advised a lecture group for pretty bright undergrads with the goal of understanding this proof, and a dozen two-hours sessions where not sufficient to go to the end of ot; note that the students had no background in dynamical systems.
May
15
awarded  Nice Question