162 citations · 1.3k across the 49 of their papers we have counts for
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On gradient bounds for the heat kernel on the Heisenberg group
Dominique Bakry, Fabrice Baudoin, Michel Bonnefont +1
It is known that the couple formed by the two dimensional Brownian motion and its Lévy area leads to the heat kernel on the Heisenberg group, which is one of the simplest sub-Riema…
The Dirichlet Markov Ensemble
Djalil Chafai
We equip the polytope of Markov matrices with the normalized trace of the Lebesgue measure of . This probability space provides random Markov matrices…
A new method for the estimation of variance matrix with prescribed zeros in nonlinear mixed effects models
Djalil Chafai, Didier Concordet
We propose a new method for the Maximum Likelihood Estimator (MLE) of nonlinear mixed effects models when the variance matrix of Gaussian random effects has a prescribed pattern of…
Circular law for non-central random matrices
Djalil Chafai
Let be an infinite array of i.i.d. complex random variables, with mean 0 and variance 1. Let $\la_{n,1},...,\la_{n,n}$ be the eigenvalues of $(\frac{1}{\sqrt…