2,682 reputation
1629
bio website
location Besançon, France
age 34
visits member for 1 year, 6 months
seen Apr 3 at 18:32

Hello!

I am a statistician at INSEE, the French national statistical institute.

Mathematics is mainly a hobby for me, and I strive not to forget too much from university (MS in applied mathematics at Lyon 1). MSE helps enormously in giving ideas to learn more.

I also like computing and numerical analysis.


Mar
23
reviewed Approve suggested edit on Extending by zero a Sobolev function
Mar
22
reviewed Approve suggested edit on Isomorphism between Möbius transformations and $SL(2,\mathbb{C})/\mathbb{Z}_2$
Feb
27
reviewed Edit suggested edit on normal to hyperplane $ 0.5x_1-5.5x_2-2.5x_3+9x_4 \le 0 $
Feb
27
revised normal to hyperplane $ 0.5x_1-5.5x_2-2.5x_3+9x_4 \le 0 $
Changed tags
Feb
24
revised Finding a general solution of a differential equation using the method of undetermined coefficients
added 10 characters in body
Feb
18
comment Solve linear equation system $A'Ax=A'Bz$
Singular value decomposition, see also here
Feb
18
comment How much is ${\aleph_0}^{\aleph _ 0}$?
An idea to prove they are both equipotent to $[0,1]$: for the LHS one, use binary digits decomposition, for the RHS, use decomposition in continued fractions. There are some tricks not to forget, but it should work.
Feb
3
reviewed Approve suggested edit on Constructiveness of Proof of Godel's Completeness Theorem
Jan
28
revised Let $f : [0;1] \to \mathbb{R}$ be a continuous function such that $f(0) = 0$. Which of the following statements are true?
typo
Jan
28
comment Let $f : [0;1] \to \mathbb{R}$ be a continuous function such that $f(0) = 0$. Which of the following statements are true?
You can't take $f(t)=\sin nt$ since $f$ is fixed and $n$ is varying (notice th for all $n$).
Jan
26
comment Pyramid Question
Ok, then as you write in the second paragraph, the "top" of the pyramid may be at any height, thus all side will not be equal, in general
Jan
26
revised Pyramid Question
edited tags
Jan
19
reviewed Approve suggested edit on Example of a commutative ring that is Artinian but not Noetherian
Jan
18
revised Need help with integration
added 14 characters in body
Jan
17
revised Why does $\frac{d}{dx}\sin(x) = \cos (x)$?
added 1 characters in body
Jan
17
comment are $f(f(x))=f(x)$ and $f(x)=x$ equivalent?
Try $f(x)=|x|$.
Jan
17
revised Is this an abuse of notation?
edited tags
Jan
17
reviewed Approve suggested edit on Calculus question velocity
Jan
17
revised Need help with integration
added 17 characters in body
Jan
17
answered Need help with integration