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Joint spectrum in the Calkin algebra

A. T. Dash
1975 Bulletin of the American Mathematical Society  
A point z = (Zj, . . . , z n ) of C n is in o p (A) (the joint eigenvalue of A) if AMS (MOS) subject classifications (1970). Primary 47A05, 47A10, 47B05, 47B20, 47B30, 46H10.
doi:10.1090/s0002-9904-1975-13925-5 fatcat:vku6lmslmjadxckjkp43qbvxbi