1 citations · 1 across the 6 of their papers we have counts for
6 papers
Diagonal dimension and intermediate sub-C*-algebras
Grigoris Kopsacheilis
We show that finiteness of diagonal dimension, in the sense of Li--Liao--Winter, passes to intermediate sub-C*-algebras. More specifically, we obtain an upper bound for the diagona…
Paper-folding models for the CAR algebra
Grigoris Kopsacheilis, Wilhelm Winter
We show that the CAR algebra admits a Cantor spectrum C*-diagonal that is not conjugate to the standard AF diagonal. We obtain this by classification theory of C*-algebras, and the…
Diagonal comparison of ample C*-diagonals
Grigoris Kopsacheilis, Wilhelm Winter
We introduce diagonal comparison, a regularity property of diagonal pairs where the sub-C*-algebra has totally disconnected spectrum, and establish its equivalence with the concurr…
Uniform property and the small boundary property
Grigoris Kopsacheilis, Hung-Chang Liao, Aaron Tikuisis +1
We prove that, for a free action of a countably infinite discrete amenable group on a compact metric space, the small boundary property is implied by…
Essential freeness, allostery and -stability of crossed products
Eusebio Gardella, Shirly Geffen, Rafaela Gesing +2
We explore classifiability of crossed products of actions of countable amenable groups on compact, metrizable spaces. It is completely understood when such crossed products are sim…
Bauer simplices and the small boundary property
David Kerr, Grigoris Kopsacheilis, Spyridon Petrakos
We show that, for every minimal action of a countably infinite discrete group on a compact metrizable space, if the extreme boundary of the simplex of invariant Borel probability m…