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math.OA2020★ 7 cited
The Free Tangent Law
Wiktor Ejsmont, Franz Lehner
Nevanlinna-Herglotz functions play a fundamental role for the study of infinitely divisible distributions in free probability. In the present paper we study the role of the tangent…
math.OA2020★ 10 cited
Sums of Commutators in Free Probability
Wiktor Ejsmont, Franz Lehner
We study the linear span of commutators of free random variables and show that these are the only quadratic forms which satisfy the following equivalent properties: * preservation…