BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Mitch Hamidi (Embry‑Riddle Aeronautical University) DTSTART:20240417T190000Z DTEND:20240417T200000Z DTSTAMP:20260420T052909Z UID:NYC-NCG/162 DESCRIPTION:Title: $C^*$-extensions of non-self-adjoint dynamics\nby Mitch Hamidi (Embr y‑Riddle Aeronautical University) as part of Noncommutative geometry in NYC\n\n\nAbstract\nGiven the action of a group G on a non-self-adjoint ope rator algebra A\, the crossed product of A by G can be realized as the sub algebra of a $C^*$-crossed product when the dynamics of G acting on A can be extended to self-adjoint dynamics of G acting on a $C^*$-algebra. In th is talk\, we characterize the existence of such a dynamical extension in t erms of the boundary ideal structure for A in its maximal representation. We define a lattice structure for an operator algebra’s completely isome tric representation theory and discuss how one might recover the crossed p roduct of an operator algebra in a representation lacking a self-adjoint d ynamical extension.\n LOCATION:https://researchseminars.org/talk/NYC-NCG/162/ END:VEVENT END:VCALENDAR