bio  website  wwwfourier.ujfgrenoble.fr/… 

location  Grenoble  
age  29  
visits  member for  3 years, 10 months 
seen  4 hours ago  
stats  profile views  1,232 
Postdoc at EPFL, works in Riemannian geometry, and more specifically on Ricci flow.
21h

comment 
Is the hypersurface satisfying $\langle xx_0,\nu\rangle>0$ diffeomorphic to sphere?
A cylinder in $\mathbb{R}^3$ satisfies your condition (with $x_0=0$ for the cylinder $\{(x,y,z)x^2+y^2=1\}$). Maybe you want to assume compactness of $M$ ? 
Jul 7 
comment 
The space of affine functions on a riemannian manifold
If I remembrer correctly, if (M,g) admits k linearly independent non constant affine functions, then M=NxR^k with a product metric. 
Jul 2 
awarded  Curious 
Jun 22 
revised 
Is this function space a “classical” Sobolev space?
added 285 characters in body 
Jun 21 
asked  Is this function space a “classical” Sobolev space? 
May 17 
answered  both convex and superharmonic function on manifold concave? 
May 15 
answered  Is group theory useful in any way to optimization? 
May 2 
comment 
When is the GromovHausdorff limit of a sequence of manifolds itself a manifold?
@ChihWeiChen Maybe you can make an answer of your comment. 
Feb 25 
awarded  Nice Answer 
Feb 25 
comment 
Topologie sur l'ensemble des sousgroupes de GL_n(R)
I was just writing an answer about the Chabauty topology when you commented ! I didn't know about the Vietoris topology though. 
Feb 25 
answered  Topologie sur l'ensemble des sousgroupes de GL_n(R) 
Jan 27 
comment 
Background to understand Gromov's green book
Yes, a "good part" is probably really optimistic ! 
Jan 25 
answered  Background to understand Gromov's green book 
Jan 23 
comment 
The cones for Bochner–Lichnerowicz–Weitzenböck formula
When working on the bundle of $k$forms, all of these cones contain the cone of nonnegative curvature operators (as operators on $2$vectors). Can this be proved in general ? 
Dec 10 
answered  Negative pinching and Ricci flow 
Nov 27 
comment 
Smoothing of the distance function on a Riemannian manifold
@DeaneYang For Greene and Wu, no curvature assumption is required. 
Nov 27 
comment 
Smoothing of the distance function on a Riemannian manifold
@VladimirSMatveev : I had a look at Azagra's paper, the improvement over Greene and Wu is that it handle infinite dimensional manifolds (at the level of the results, not of the proof which use really different methods if I understand). 
Nov 26 
revised 
Smoothing of the distance function on a Riemannian manifold
added 214 characters in body 
Nov 26 
revised 
Smoothing of the distance function on a Riemannian manifold
added 125 characters in body 
Nov 26 
answered  Smoothing of the distance function on a Riemannian manifold 