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math.FA2025
Cowen-Douglas operators on quaternionic Hilbert spaces
Xiaoqi Feng, Bingzhe Hou, Kui Ji
In 1978, M. J. Cowen and R. G. Douglas introduced a class of geometric operators (known as Cowen-Douglas class of operators) and associated a Hermitian holomorphic vector bundle to…
math.FA2023
The Cowen-Douglas operators with strongly flag structure
Yufang Xie, Kui Ji
Denote as the collection of operators possessing a flag structure in the Cowen-Douglas class , and all the irreducible homogeneous operato…