Olivier Bégassat
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 Mar 22 reviewed Close What function would do this Mar 22 reviewed Close Mathematical Background for Computer Vision Mar 22 reviewed Leave Open The Weaver Android app $\rightarrow$ cute combinatorics problem Mar 22 reviewed Leave Open What is the best way for an amateur Mathematician to get their paper reviewed? Mar 21 reviewed Close What are the properties of the positive real numbers pair $(a,b)$ for which $a b \geq a + b$? Mar 20 reviewed Leave Open The expected value of $1/(1+X)$ where $X$ has geometric distribution Mar 20 reviewed Leave Open $f(x)$ is non-negative and that $\int_{-a}^b xf(x) dx = 0$. Show $\int_{-a}^bx^2f(x)dx \leq ab\int_{-a}^b f(x)dx$ Mar 20 reviewed Close Looking for Open Source Math Software with Poor Documentation Mar 13 reviewed No Action Needed equivalent ways of writing the spectral norm Mar 13 reviewed Leave Open A relationship among the first $n+1$ primes Mar 12 reviewed Close Number of solutions of an arithmetic function's equation Jan 31 reviewed Approve give a counterexample of monoid Jan 16 reviewed Leave Open Metric $p := p(x,y)= \min(|x-y|, 1- |x-y|)$ $x,y \in [0,1)^2$. Prove metric space is compact. Jan 13 reviewed Leave Open closure of a convex set in a normed linear space is convex ? Jan 13 reviewed Leave Open $T^n = 0$ but $T^{n-1} \neq 0$: find basis such that $Ta_j = a_{j+1}$ for $j < n$ and $Ta_n = 0$ Jan 13 reviewed Approve functional-equations tag wiki excerpt Jan 13 reviewed Reject functional-equations tag wiki Dec 29 reviewed Reject Is $\{ u \in H^1(\Omega) \mid \Delta u \in L^2(\Omega)\}$ dense in $H^1(\Omega)$? Dec 19 reviewed Approve Which convex $2n$-gons have symmetry group $D_n$ instead of $D_{2n}$? Dec 19 reviewed Leave Open Proving function in real analysis