2 citations · 3 across the 5 of their papers we have counts for
5 papers
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…
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…
Entropy and multivariable interpolation
Gelu Popescu
We define a new notion of entropy for operators on Fock spaces and positive definite multi-Toeplitz kernels on free semigroups. This is studied in connection with factorization the…
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…
Commutator lifting inequalities and interpolation
Gelu Popescu
In this paper we obtain a multivariable commutator lifting inequality, which extends to several variables a recent result of Foias, Frazho, and Kaashoek. The inequality yields a mu…