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arXiv · 1301.1038

Nonself-adjoint 2-graph algebras

Adam H. Fuller·Dilian Yang
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Abstract

We study the structure of weakly-closed nonself-adjoint algebras arising from representations of single vertex 2-graphs. These are the algebras generated by 2 isometric tuples which satisfy a certain commutation relation. We show that these algebras have a lower-triangular $3\times 3$ form. The left-hand side of this matrix decomposition is a slice of the enveloping von Neumann algebra generated by the 2-graph algebra. We further give necessary and sufficient conditions for these algebras themselves to be von Neumann algebras. The paper concludes with further study of atomic representations.

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Adam H. Fuller, Dilian Yang. 2013-01-06. Nonself-adjoint 2-graph algebras. https://doi.org/10.1090/s0002-9947-2015-06385-5

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