A brief survey of Antoine Ehrhard's scientific work -- Invariance principles for the empirical measure of a mixing sequence and for the local time of markov processes -- Almost exchangeable sequences in Lq, 1 ? q <2 -- An application of a martingale inequality of dubins and freedman to the law of large numbers in Banach spaces -- On the small balls condition in the central limit theorem in uniformly convex spaces -- Some remarks on the uniform convergence of Gaussian and Rademacher Fourier quadratic forms -- Rates of convergence in the central limit theorem for empirical processes -- Mean square convergence of weak martingales -- Metric entropy and the central limit theorem in Banach spaces