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math.OA2007
On freely indecomposable measures
Hari Bercovici, Jiun-Chau Wang
We show that a probability measure is not a nontrivial free additive convolution if it puts no mass in an interval whose endpoints are atoms. The analogous results for free multipl…
math.FA2007
The Horn conjecture for compact selfadjoint operators
H. Bercovici, W. S. Li, D. Timotin
We determine the possible eigenvalues of compact selfadjoint operators A,B,C... with the property that A=B+C+... When all these operators are positive, the eigenvalues were known t…