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L -Khintchine-Bonami inequality in free probability

Artur Buchholz (1998)

Banach Center Publications

We prove the norm estimates for operator-valued functions on free groups supported on the words with fixed length ( f = | w | = l a w λ ( w ) ). Next, we replace the translations by the free generators with a free family of operators and prove inequalities of the same type.

Lipschitzian norm estimate of one-dimensional Poisson equations and applications

Hacene Djellout, Liming Wu (2011)

Annales de l'I.H.P. Probabilités et statistiques

By direct calculus we identify explicitly the lipschitzian norm of the solution of the Poisson equation in terms of various norms of g, where is a Sturm–Liouville operator or generator of a non-singular diffusion in an interval. This allows us to obtain the best constant in the L1-Poincaré inequality (a little stronger than the Cheeger isoperimetric inequality) and some sharp transportation–information inequalities and concentration inequalities for empirical means. We conclude with several illustrative...

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