Abstract
In this paper, we give a product formula of Hermite polynomials and a relation between real Wiener–Itô chaos and complex Wiener–Itô chaos is shown. By this relation and the known multivariate extension of the fourth moment theorem for real multiple integrals, a fourth moment theorem (the Nualart–Peccati criterion) for complex Wiener–Itô multiple integrals is obtained.
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