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- W4320342942 abstract "A unital $C^*$-algebra is called $N$-subhomogeneous if its irreducible representations are finite dimensional with dimension at most $N$. We extend this notion to operator systems, replacing irreducible representations by boundary representations. This is done by considering the matrix state space associated with an operator system and identifying the boundary representations as absolute matrix extreme points. We show that two $N$-subhomogeneous operator systems are completely order equivalent if and only if they are $N$-order equivalent. Moreover, we show that a unital $N$-positive map into a finite dimensional $N$-subhomogeneous operator system is completely positive. We apply these tools to classify pairs of $q$-commuting unitaries up to $*$-isomorphism. Similar results are obtained for operator systems related to higher dimensional non-commutative tori." @default.
- W4320342942 created "2023-02-13" @default.
- W4320342942 creator A5018471379 @default.
- W4320342942 date "2023-02-09" @default.
- W4320342942 modified "2023-09-23" @default.
- W4320342942 title "Subhomogeneous Operator Systems and Classification of Operator Systems Generated by $Lambda$-Commuting Unitaries" @default.
- W4320342942 doi "https://doi.org/10.48550/arxiv.2302.04767" @default.
- W4320342942 hasPublicationYear "2023" @default.
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