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A simple separable exact C*-algebra not anti-isomorphic to itself
Authors:N Christopher Phillips  Maria Grazia Viola
Institution:1. Department of Mathematics, University of Oregon, Eugene, OR, 97403-1222, USA
2. Department of Mathematics and Interdisciplinary Studies, Lakehead University-Orillia, 500 University Ave, Orillia, ON, L3V09B, Canada
Abstract:We give an example of an exact, stably finite, simple, separable C*-algebra D which is not isomorphic to its opposite algebra. Moreover, D has the following additional properties. It is stably finite, approximately divisible, has real rank zero and stable rank one, has a unique tracial state, and the order on projections over D is determined by traces. It also absorbs the Jiang-Su algebra Z, and in fact absorbs the 3 UHF algebra. We can also explicitly compute the K-theory of D, namely ${K_0 (D) \cong {\mathbb{Z}} \tfrac{1}{3}]}$ with the standard order, and K 1 (D) =  0, as well as the Cuntz semigroup of D, namely ${W (D) \cong {\mathbb{Z}} \tfrac{1}{3} ]_{+} \sqcup (0, \infty).}$
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