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math.OA2024
Fell bundle ladder
S. Kaliszewski, John Quigg, Dana P. Williams
We use the Ladder Technique to establish bijections between the ideals of related Fell bundles.
math.OA2024
Coactions of compact groups on
S. Kaliszewski, Magnus B. Landstad, John Quigg
We prove that every coaction of a compact group on a finite-dimensional -algebra is associated with a Fell bundle. Every coaction of a compact group on a matrix algebra is imp…
math.OA2024
Bijections Between Sets of Invariant Ideals, Via the Ladder Technique
Matthew Gillespie, S. Kaliszewski, John Quigg +1
We present a new method of establishing a bijective correspondence - in fact, a lattice isomorphism - between action- and coaction-invariant ideals of C*-algebras and their crossed…