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DTSTART:20220313T070000
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DTSTART:20221106T060000
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DTSTART;TZID=America/Toronto:20230209T160000
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URL:https://uwaterloo.ca/pure-mathematics-analysis/events/c-envelopes-and-s
 emigroup-c-algebras
SUMMARY:C*-envelopes and semigroup C*-algebras
CLASS:PUBLIC
DESCRIPTION:CAMILA SEHNEM\, DEPARTMENT OF PURE MATHEMATICS\, UNIVERSITY OF 
 WATERLOO\n\nThe C*-envelope of an operator algebra C is the smallest C*-al
 gebra\ngenerated by a completely isometric copy of C. In this talk I will\
 nconsider the C*-envelope of the non-selfadjoint operator algebra\ngenerat
 ed by the canonical isometric representation of a semigroup P\non $\\ell^2
 (P)$\, where $P$ is assumed to be a submonoid of a group.  I\nwill show t
 hat the C*-envelope of this algebra is canonically\nisomorphic to the boun
 dary quotient of the Toeplitz algebra of P. If\ntime permits\, I will disc
 uss a similar result in a more general\nsetting\, in which the semigroup o
 f isometries is replaced by a product\nsystem of C*-correspondences.\n\nTh
 is seminar will be held both online and in person:\n\n* Room: MC 5479\n * 
 Zoom link:\nhttps://uwaterloo.zoom.us/j/94186354814?pwd=NGpLM3B4eWNZckd1aT
 ROcmRreW96QT09\n[https://uwaterloo.zoom.us/j/94186354814?pwd=NGpLM3B4eWNZc
 kd1aTROcmRreW96QT09]
DTSTAMP:20260320T081919Z
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