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math.OA2005★ 1 cited
Multivariable Bohr inequalities
Gelu Popescu
Operator-valued multivariable Bohr type inequalities are obtained for: a class of noncommutative holomorphic functions, generalizing the analytic functions on the open unit disc; t…
math.OA2005
Multivariable moment problems
Gelu Popescu
In this paper we solve moment problems for Poisson transforms and, more generally, for completely positive linear maps on unital C*-algebras generated by ''universal'' row contract…
math.OA2003★ 2 cited
Similarity and ergodic theory of positive linear maps
Gelu Popescu
In this paper we study the operator inequality ϕ(X)\leq X and the operator equation ϕ(X)= X, where ϕis a w^*-continuous positive (resp. completely positive) linear map on B(H). We…