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arXiv · 1512.07277

Semiprojectivity and properly infinite projections in graph C*-algebras

Søren Eilers·Takeshi Katsura
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Abstract

We give a complete description of which unital graph C*-algebras are semiprojective, and use it to disprove two conjectures by Blackadar. To do so, we perform a detailed analysis of which projections are properly infinite in such C*-algebras.

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Søren Eilers, Takeshi Katsura. 2015-12-22. Semiprojectivity and properly infinite projections in graph C*-algebras. https://arxiv.org/abs/1512.07277

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