13 citations · 27 across the 8 of their papers we have counts for
11 papers
Classification of q-pure q-weight maps over finite dimensional Hilbert spaces
Christopher Jankowski, Daniel Markiewicz, Robert T. Powers
An -semigroup of is a one parameter strongly continuous semigroup of -endomorphisms of that preserve the identity. Every -semigroup that possesses a stro…
C*-envelopes of tensor algebras arising from stochastic matrices
Adam Dor-On, Daniel Markiewicz
In this paper we study the C*-envelope of the (non-self-adjoint) tensor algebra associated via subproduct systems to a finite irreducible stochastic matrix . Firstly, we identif…
On the classification and modular extendability of E-semigroups on factors
Panchugopal Bikram, Daniel Markiewicz
In this paper we study modular extendability and equimodularity of endomorphisms and E-semigroups on factors with respect to f.n.s. weights. We show that modular extendability…
Operator algebras and subproduct systems arising from stochastic matrices
Adam Dor-On, Daniel Markiewicz
We study subproduct systems in the sense of Shalit and Solel arising from stochastic matrices on countable state spaces, and their associated operator algebras. We focus on the non…
Aligned CP-semigroups
Christopher Jankowski, Daniel Markiewicz, Robert T. Powers
A CP-semigroup is aligned if its set of trivially maximal subordinates is totally ordered by subordination. We prove that aligned spatial E_0-semigroups are prime: they have no non…
Continuous families of E_0-semigroups
Ilan Hirshberg, Daniel Markiewicz
We consider families of E_0-semigroups continuously parametrized by a compact Hausdorff space, which are cocycle-equivalent to a given E_0-semigroup β. When the gauge group of …