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bio website www-fourier.ujf-grenoble.fr/…
location Grenoble, France
age 34
visits member for 4 years, 7 months
seen yesterday
I am a teacher and researcher at Université Joseph Fourier.

1d
comment Parity of $\lfloor 1/(x y) \rfloor$ not equally distributed
Well, given any law on $\mathbb{N}$, you will see this kind of things happen: it is impossible to find a probability measure on $\mathbb{N}$ which gives weight $1/k$ to each of the classes modulo $k$, simultaneously for all $k$ (the weight of any number should be zero to meet that request).
2d
comment CAT spaces and Metric Measure Spaces
There sure are, few paper do geometry without some kind of analysis. But I don't see how one could point you to something relevant with only that info. Ask google scholar, and explain what does not satisfy you in the result, but you have to give us something if you expect help.
Oct
17
comment CAT spaces and Metric Measure Spaces
That's my point: in your comments to my answer you seem to be searching for your question. "A link" is not very precise, apart from re-explaining the definitions I do not see what kind of answer you could expect (clearly, neither imply the other if that is what you meant). Moreover it seems like you drift further apart from your original question with each new comment, an additional reason why I think you should first think more about what you really want to ask. Or maybe SE is just not the kind of place for your question.
Oct
17
comment CAT spaces and Metric Measure Spaces
Now that some time has passed, I feel your question is really too vague and will not attract a definite answer. I wonder if we should close it, or maybe you can precise it? Can you explain what you are after and why?
Oct
15
answered CAT spaces and Metric Measure Spaces
Oct
11
comment Surfaces ruled through a subset of points
It seems to me that if a sequence of lines in $S$ converges to a line $L$, then (assuming $S$ is topologically closed) $L$ must also be in $S$. Doesn't this answer all your questions?
Oct
8
awarded  Nice Answer
Oct
3
reviewed Approve suggested edit on Higher Cerf Theory
Oct
1
comment The relation between Gromov hausdorff convergence and inverse limit of compact metric spaces
Gromov-Hausdorff convergence makes sense in the "space" of compact metric spaces up to isometry. So "being in a Euclidean space" does not make much sense her.
Sep
30
awarded  Explainer
Sep
28
comment Simple yet interesting applications of Calculus or Linear Algebra to Economics
I would have voted to migrate to MathematicsEducators.SE, but this is not available (yet?). I strongly advise you to ask your question there, it will probably be well-received and will fit much better than here.
Sep
27
comment Proof or citation?
Using this solution, if the referee really thinks the proof is straightforward she may suggest you don't include the proof: it gives you a second opinion on the matter.
Sep
27
comment Reading Papers in a Language you don't Speak
I would think that the importance of learning French really depends on your fields, and even subfield (I might be biased since being French, I don't see how bad it would be without it). For example, if you work on contact geometry then French tends to be very useful; as you point out with SGA, if you work on certain flavor of algebraic geometry it might be important too. On the other hand, if you work on PDE I think that very few people still write in French. You need to assess the importance of French in your field before learning it, if you want to optimize your time.
Sep
25
comment Is there a generalized Birkhoff ergodic theorem?
You might be interested by the following blog post of Tao and the corresponding article.
Sep
21
comment Diagonalization of 4th order tensors
For tensor having the symmetries of the curvature tensor, one has a relatively good decomposition. It should at least give an idea of what to expect, the key words are Kulkarni-Nomizu product and Riemann tensor.
Sep
21
comment Square filling self avoiding walk
After more thinking, I think the question deserves its place here; I would be happy to have more precisions (about which kind of randomness is wanted notably) but the extension problem is interesting in its own right.
Sep
20
comment Intersection of closed geodesics in hyperbolic surface
I do not get question 2: $\gamma$ is a closed geodesic passing through $p$!
Sep
20
comment Square filling self avoiding walk
As far as I know, this is more suitable to math.SE; however I don't fully understand the details of the question: why do you want randomness (and is it mandatory?)? Why do you want a path (rather than a tree), and is it mandatory?
Sep
15
answered Is it possible to construct any random variable on the Euclidean Probability space?
Sep
13
comment Nonpositive curvature of Stein manifolds
I don't know anything about Stein manifold, but if many topologies can be realized, then the Cartan-Hadamard theorem will give you great constraints (any simply connected manifold admitting a metric with non-positive curvature must be diffeomorphic to $\mathbb{R}^n$).