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arxiv: 1010.5842 · v2 · pith:6DSCEUJEnew · submitted 2010-10-28 · 🧮 math.OA

Symmetry in the Cuntz Algebra on two generators

classification 🧮 math.OA
keywords fixedmathcalpointsubalgebraactionalgebraautomorphismcanonical
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We investigate the structure of the automorphism of $\mathcal{O}_{2}$ which exchanges the two canonical isometries. Our main observation is that the fixed point C*-subalgebra for this action is isomorphic to $\mathcal{O}_{2}$ and we detail the relationship between the crossed-product and fixed point subalgebra.

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