the 973 Project of China and the National Natural Science Foundation of China(Grant No.19631070)
In this paper, we are concerned with the classification of operators on complex separable Hilbert spaces, in the unitary equivalence sense and the similarity sense, respectively. We show that two strongly irreducible ...
This work was supported by the 973 Project of China and the National Natural Science Foundation of China (Grant No. 19631070).
This paper shows that every operator which is quasisimilar to strongly irreducible Cowen-Douglas operators is still strongly irreducible. This result answers a question posted by Davidson and Herrero (ref. [1]).
the 973 Project of China and the National Natural Science Foundation of China (Grant No. 19631070).
We give a necessary and sufficient condition for the nilpotent operators to be similiar to irreducible operators, and give an answer to D.A.Herrero Conjectures for nilpotent operators.