Blar i NTNU Open på forfatter "Kaliszewski, Steve"

Coaction functors
Kaliszewski, Steve; Landstad, Magnus B.; Quigg, John (Journal article; Peer reviewed, 2016)A certain type of functor on a category of coactions of a locally compact group on C ∗ C∗algebras is introduced and studied. These functors are intended to help in the study of the crossedproduct functors that have ... 
Exact large ideals of B(G) are downward directed.
Kaliszewski, Steve; Landstad, Magnus B.; Quigg, John (Journal article; Peer reviewed, 2016)We prove that if E and F are large ideals of B(G) for which the associated coaction functors are exact, then the same is true for E∩F. We also give an example of a coaction functor whose restriction to the maximal coactions ... 
Exotic Coactions
Landstad, Magnus B.; Kaliszewski, Steve; Quigg, John (Journal article; Peer reviewed, 2016)If a locally compact group G acts on a C *algebra B, we have both full and reduced crossed products and each has a coaction of G. We investigate ‘exotic’ coactions in between the two, which are determined by certain ideals ... 
Ordered invariant ideals of FourierStieltjes algebras
Landstad, Magnus Brostrup; Kaliszewski, Steve; Quigg, John (Journal article; Peer reviewed, 2018)For a locally compact group G, every Ginvariant subspace E of the FourierStieltjes algebra B(G) gives rise to the following two ideals of the group C ∗ algebra C ∗ (G): the intersection of the kernels of the representations ... 
Properness conditions for actions and coactions
Landstad, Magnus B.; Kaliszewski, Steve; Quigg, John (Journal article; Peer reviewed, 2016)Three properness conditions for actions of locally compact groups on C⇤algebras are studied, as well as their dual analogues for coactions. To motivate the properness conditions for actions, the commutative cases (actions ... 
Tensorproduct coaction functors
Kaliszewski, Steve; Landstad, Magnus Brostrup; Quigg, John (Peer reviewed; Journal article, 2020)Recent work by Baum et al. [‘Expanders, exact crossed products, and the Baum–Connes conjecture’, Ann. KTheory 1(2) (2016), 155–208], further developed by Buss et al. [‘Exotic crossed products and the Baum–Connes conjecture’, ...