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olivier dot begassat dot cours at gmail dot com


12h
comment Algebraic proof of Ehrhart's theorem
Wow, this is a beautiful result! +1
1d
reviewed Approve suggested edit on Can we have Tchebysheff's equality?
1d
reviewed Approve suggested edit on Linear Programming with 3 variables
2d
reviewed No Action Needed Usage of capital and small letters
2d
reviewed Approve suggested edit on Simple proof that a $3\times 3$-matrix with entries $s$ or $s+1$ cannot have determinant $\pm 1$, if $s>1$.
2d
reviewed Approve suggested edit on Wrong interpretation of the indefinite integral
2d
reviewed Approve suggested edit on Using metric to raise and lower indices
2d
comment Fundamental group of quotient of $S^1 \times [0,1]$
Have you tried Van Kampen?
2d
reviewed Close Show that something follow power law
2d
reviewed Close Prove that $16 \cos 12^\circ ·\cos 24^\circ ·\cos 48^\circ· \cos 96^\circ ·\cos 192^\circ = 1$
Jul
26
revised Flat connection with non-trivial holonomy? I cannot get it
added 1155 characters in body
Jul
26
answered Flat connection with non-trivial holonomy? I cannot get it
Jul
25
comment Show elementarily that $\lim_{R\to\infty}\int_{\Gamma_1} \frac{e^{iz}}{z} = 0$
This is false, for instance, with $z=R$ we get $|e^{iz}/z|=1/R$.
Jul
23
revised a question about sequence and series. prove $ \lim_{n \to \infty}( n\ln n)a_{n}=0$?
added 3 characters in body
Jul
23
comment a question about sequence and series. prove $ \lim_{n \to \infty}( n\ln n)a_{n}=0$?
Does $nlnn$ stand for $n\ln(n)$?
Jul
22
comment Can anyone give the equation of the inverse of radial projection from a tetrahedron to sphere?
The answer will depend on the tetrahedron and how you are parametrizing it.
Jul
22
comment Completeness of Locally Compact Metric Space and Group of Isometries
Looks good. ${}{}$
Jul
22
comment Completeness of Locally Compact Metric Space and Group of Isometries
$(0,1)$ is a locally compact metric space...
Jul
22
revised Irreducibility of a polynomial over a field
spelling
Jul
20
answered $\exp(\ln(x))=x$ and $\ln(\exp(y))=y$.