1,612 reputation
1818
bio website www-fourier.ujf-grenoble.fr/…
location Grenoble
age 29
visits member for 4 years, 1 month
seen 7 hours ago

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


1d
answered Calculating Exterior Distance from Measurements of Inner Geometry
Oct
17
comment Is there an English translation of Minding's 1839 paper?
Can you state the theorem you want more precisely ? In particular the distinction between isometric and congruent.
Oct
8
comment Surfaces with curvature $\leq K$ are of bounded integral curvature
Welcome to MO !
Oct
3
comment How to estimate $|\nabla T|^2\geq c|\delta T|^2$ besides Cauchy-Schwarz inequality?
Why do you expect such an improvement to hold ?
Sep
24
awarded  Necromancer
Sep
21
comment Did differential geometry undergo a notation change?
In the same spirit, you may have noticed that even the definition of the curvature tensor can change between modern textbooks!
Aug
30
awarded  Yearling
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 ?