6,643 reputation
2445
bio website math.u-psud.fr/~chambert
location Université Paris-Sud (Orsay)
age 43
visits member for 4 years, 11 months
seen 18 hours ago

18h
answered Texts about Dwork's work
Mar
20
comment Stokes theorem with corners
See also Serge Lang's book on Fundamentals of differentiable geometry (Chapter XVII, §3).
Mar
19
comment Homotopy Type Theory: What is it?
@IianSmythe, in the same vein as Hurkyl's comment, Set theory allows you to ask whether pi (defined as you wish, coded as a set, respecting strictly the pseudo a conventions we are used to) is a group. Or whether 3 is a topology (it is...).
Mar
17
awarded  Nice Answer
Mar
16
revised applications of Berkovich spaces
Correction of a misattribution.
Mar
16
comment applications of Berkovich spaces
@JérômePoineau: Oops. Thanks. I edit at once.
Mar
16
answered Should the Grothendieck ring of varieties be K_0 of numerical motives?
Mar
16
comment Should the Grothendieck ring of varieties be K_0 of numerical motives?
Only with rational coefficients are the motives of $E$ and $E'$ isomorphic.
Mar
16
answered applications of Berkovich spaces
Mar
16
comment Does the kan extension preserves contractible presheaves?
May we assume that $sPsh(\mathcal D)$ means simplicial presheaves on $\mathcal D$?
Mar
15
answered Proper morphism and irreducibility of schemes
Mar
9
comment Sobolev's lemma on manifolds
This is done in Griffiths-Harris's book on Algebraic geometry, along the lines checked by ThiKu.
Mar
9
comment Laumon's “Sur les modules de Krichever”
Send him an email? His email address can be found easily on the web. (firstname.lastname@math.u-psud.fr)
Mar
9
awarded  Nice Answer
Mar
9
awarded  Enlightened
Mar
9
awarded  Nice Answer
Mar
8
comment Upper bound for the number of integral points in a convex set
In their paper Lattice points in convex bodies (Israel J. Math, Vol. 74, Nos. 2-3, 1991), H. Gillet and C. Soulé prove a similar inequality in all dimensions: Under your assumptions, $\lvert K\cap \mathbf Z^n\rvert \leq 6^n/\mathop{\rm Vol}(K^*)$, where $K^*$ is the convex body dual to $K$ (Prop. 3). They eventually combine this inequality with Bourgain-Milman's one.
Mar
8
answered Blow-ups and blow-downs
Mar
7
revised Blowing-up a point in the singular locus
typo in title :-(
Mar
6
comment Abstract connectedness
@sure. I had forgotten the precision “closed and connected“; I edited the comment.