Abstract. We describe local spectral properties of upper triangular block operators having a diagonal that satisfies the single valued extension property together with its adjoint. Some results on $n$-normal operators and Jordan operators are recaptured.
AMS Subject Classification
(1991): 47A 11, 47A10
local spectral theory,
Received November 5, 2004, and in revised form August 2, 2005. (Registered under 5894/2009.)