Perturbations of centre-fixing dynamical systems.
Pexider type operators and their norms in spaces
In this paper, we introduce Pexiderized generalized operators on certain special spaces introduced by Bielecki-Czerwik and investigate their norms.
Physical states on quantum logics. I
Poids associé à une algèbre hilbertienne à gauche
Poids et espérances conditionnelles dans les algèbres de von Neumann
Pointwise Convergence Theorems in L2 over a von Neumann Algebra.
Poisson boundaries of discrete quantum groups
This is a survey article about a theory of a Poisson boundary associated with a discrete quantum group. The main problem of the theory, that is, the identification problem is explained and solved for some examples.
Polar decomposition in Rickart C*-algebras.
A new proof is obtained to the following fact: a Rickart C*-algebra satisfies polar decomposition. Equivalently, matrix algebras over a Rickart C*-algebra are also Rickart C*-algebras.
Polarity on -algebras
Positive cones associated with a von Neumann algebra.
Positive C...-semigroups on C*-algebras.
Positive Elements and the B* Condition.
Positive energy representations for quantum spin models in 1+1 dimensions
We present recent results on positive energy representations of quantum spin models.
Positive linear maps of matrix algebras
A characterization of the structure of positive maps is presented. This sheds some more light on the old open problem studied both in Quantum Information and Operator Algebras. Our arguments are based on the concept of exposed points, links between tensor products and mapping spaces and convex analysis.
Positive maps of the CCR algebra with a finite number of non-zero truncated functions
Positive operator bimeasures and a noncommutative generalization
For C*-algebras A and B and a Hilbert space H, a class of bilinear maps Φ: A× B → L(H), analogous to completely positive linear maps, is studied. A Stinespring type representation theorem is proved, and in case A and B are commutative, the class is shown to coincide with that of positive bilinear maps. As an application, the extendibility of a positive operator bimeasure to a positive operator measure is shown to be equivalent to various conditions involving positive scalar bimeasures, pairs of...
Positive projections and Jordan structure in operator algebras.
Positive self-adjoint extensions of operators affiliated with a von Neumann algebra.
Positivemaps of C*-algebras commuting with a real continous function.
Positivity and cohomology for involutive semigroups.