Wick polynomials in non-commutative probability: A group-theoretical approach

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Date

Volume

2677

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WIAS Preprints

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Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik

Abstract

Wick polynomials and Wick products are studied in the context of non-commutative probability theory. It is shown that free, boolean and conditionally free Wick polynomials can be defined and related through the action of the group of characters over a particular Hopf algebra. These results generalize our previous developments of a Hopf algebraic approach to cumulants and Wick products in classical probability theory.

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