Laboratoire Paul Painlevé

output

20022009

most citedA full sky, low foreground, high resolution CMB map from WMAP

296 citations

31 papers

math.ST2008

Random sampling of long-memory stationary processe

Anne Philippe, Marie-Claude Viano

This paper investigates the second order properties of a stationary process after random sampling. While a short memory process gives always rise to a short memory one, we prove th…

math.AG2008

Abelianisation of orthogonal groups and the fundamental group of modular varieties

V. Gritsenko, K. Hulek, G. K. Sankaran

We study the commutator subgroup of integral orthogonal groups belonging to indefinite quadratic forms. We show that the index of this commutator is 2 for many groups that occur in…

math.PR2008★ 51 cited

Joint continuity of the local times of fractional Brownian sheets

Antoine Ayache, Dongsheng Wu, Yimin Xiao

Let $B^{H} = {B^{H} (t), t \in R_{+}^{N}}$ be an $(N, d)$ -fractional Brownian sheet with index $H = (H_{1}, ..., H_{N}) \in (0, 1)^{N}$ defined by $B^H(t)=(B^H_1(t),...,B^H_d(t)) (t\in {\mathbb{R…

math.ST2008★ 15 cited

Adaptivity in convolution models with partially known noise distribution

Cristina Butucea, Catherine Matias, Christophe Pouet

We consider a semiparametric convolution model. We observe random variables having a distribution given by the convolution of some unknown density $f$ and some partially known nois…

math.CV2008

Ideaux fermes d'algebres de Beurling analytiques sur le bidisque

B. Bouya, O. El-Fallah, K. Kellay

We study the closed ideal in the Beurling algebras $A_{α, β}^{+}$ of holomorphic function $f$ in the bidisc such that $\sum_{n,m\geq 0}|\hat{f}(n,m)|(1+n)^α(1+m)^β<+\infty…

math.CV2008

Closed ideals in analytic weighted Lipschitz algebras

Brahim Bouya

We obtain a complete description of closed ideals in weighted Lipschitz algebras $Λ_{ω}$ of analytic functions on the unit disk satisfying the following condition $$\frac{|f(z)-f(w)|…