Stability of rotation relations in $C^*$-algebras
Operator Algebras
2020-05-20 v2
Abstract
Let be a non-degenerate real skew-symmetric matrix, where For any , we prove that there exists satisfying the following: if are three unitaries in any unital simple separable -algebra with tracial rank at most one, such that for all and where is a continuous branch of logarithm for some real number , then there exists a triple of unitaries such that The same conclusion holds if is rational or non-degenerate and is a nuclear purely infinite simple -algebra (where the trace condition is vacuous). If is degenerate and has tracial rank at most one or is nuclear purely infinite simple, we provide some additional injectivity condition to get the above conclusion.
Keywords
Cite
@article{arxiv.1808.05725,
title = {Stability of rotation relations in $C^*$-algebras},
author = {Jiajie Hua and Qingyun Wang},
journal= {arXiv preprint arXiv:1808.05725},
year = {2020}
}
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31 pages