4 papers
On the convergence of doubly stochastic Markov chains
Ludovick Bouthat, Nicolas Doyon, Javad Mashreghi +1
We characterize the asymptotic behavior of time-homogeneous doubly stochastic Markov chains. Our investigation revolves around understanding the dynamics of products of doubly stoc…
On the Geometry of the Birkhoff Polytope. II. The Schatten -norms
Ludovick Bouthat, Javad Mashreghi, Frédéric Morneau-Guérin
In the first of this series of two articles, we studied some geometrical aspects of the Birkhoff polytope, the compact convex set of all doubly stochastic matrices, na…
Weighted averages of sequences
Ludovick Bouthat, Javad Mashreghi, Frédéric Morneau-Guérin
The objective of the present paper is to establish three Hardy-type inequalities in which the arithmetic mean over a sequence of non-negative real numbers is replaced by some weigh…
On a question of Erdős on doubly stochastic matrices
Ludovick Bouthat, Javad Mashreghi, Frédéric Morneau-Guérin
In a celebrated paper of Marcus and Ree (1959), it was shown that if is an doubly stochastic matrix, then there is a permutation such that $\su…