Lars Aagaard and Uffe Haagerup : Moment Formulas for the
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چکیده
Let T be the quasi-nilpotent DT-operator. By use of Voiculescu’s amalgamated R-transform we compute the momets of (T −λ1)∗(T − λ1) where λ ∈ C, and the Brown-measure of T + √ Y , where Y is a circular element ∗-free from T for > 0. Moreover we give a new proof of Śniady’s formula for the moments τ(((T ∗)kT )) for k, n ∈ N.
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