1,562 reputation
1618
bio website www-fourier.ujf-grenoble.fr/…
location Grenoble
age 29
visits member for 4 years
seen 27 mins ago

Postdoc at EPFL, works in Riemannian geometry, and more specifically on Ricci flow.


Jul
22
comment Is the hypersurface satisfying $\langle x-x_0,\nu\rangle>0$ 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
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 Gromov--Hausdorff limit of a sequence of manifolds itself a manifold?
@Chih-WeiChen Maybe you can make an answer of your comment.
Feb
25
awarded  Nice Answer
Feb
25
comment Topologie sur l'ensemble des sous-groupes 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 sous-groupes 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
Nov
9
accepted Can an open manifold with positive Ricci curvature be non simply connected at infinity?