activity
20062026
most citedAsymptotic Equivalence for Nonparametric Regression

39 citations · 237 across the 48 of their papers we have counts for

collaborators

56 papers

math.PR2026

On the tails of the invariant measure for multidimensional affine stochastic recursions in the critical case

Ion Grama, Sebastian Mentemeier, Hui Xiao

We study the behavior at infinity of the invariant Radon measure for the multidimensional affine stochastic recursion where are positi…

math.PR2026

Local limit theorem for the operator norm of products of random matrices

Ion Grama, Jean-François Quint, Hui Xiao

We prove a local limit theorem for the quantity , where is a sequence of independent and identically distributed random invertible square m…

math.GR2026

Strong non-arithmeticity for Zariski dense subsemigroups

Ion Grama, Jean-François Quint, Hui Xiao

We prove a non-arithmeticity property for the complex eigenvalues of a Zariski dense subsemigroups of real reductive algebraic groups. This property will be used in [7] in order to…

math.PR2025

Local limit theorems for conditioned random walks by the heat kernel approximation

Ion Grama, Hui Xiao

We study the random walk with independent and identically distributed real-valued increments having zero mean and an absolute moment of order for some $δ>…

math.PR2025

Spinal decomposition, martingale convergence and the Seneta-Heyde scaling for matrix branching random walks

Ion Grama, Sebastian Mentemeier, Hui Xiao

We consider a matrix branching random walk on the semi-group of nonnegative matrices, where we are able to derive, under general assumptions, an analogue of Biggins' martingale con…

math.PR2024★ 2 cited

Limit theorems for critical branching processes in a finite state space Markovian environment

Ion Grama, Ronan Lauvergnat, Émile Le Page

Let be a critical branching process in a random environment defined by a Markov chain with values in a finite state space . Let $ S_n…