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math.OA2000
On the computation of spectra in free probability
Franz Lehner
We use free probability techniques to compute borders of spectra of non hermitian operators in finite von Neumann algebras which arise as `free sums' of `simple' operators. To this…
math.OA1999
Computation of some examples of Brown's spectral measure in free probability
Philippe Biane, Franz Lehner
We use free probability techniques for computing spectra and Brown measures of some non hermitian operators in finite von Neumann algebras. Examples include u_n+u_oo where u_n and…