Normal coactions of discrete groups extend to the C*-envelope of the operator algebra, resolving an open problem and identifying the C*-envelopes of operator algebras of groupoid-embeddable categories and cancellative right LCM monoids.
Pimsner, A class of C*-algebras generalising both Cuntz--Krieger algebras and crossed products by Z , in ‘Free Probability Theory, Fields Institute Communications’ 12 (1997), ed
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Normal coactions extend to the C*-envelope
Normal coactions of discrete groups extend to the C*-envelope of the operator algebra, resolving an open problem and identifying the C*-envelopes of operator algebras of groupoid-embeddable categories and cancellative right LCM monoids.