Joint A-hyponormality of operators in semi-Hilbert spaces
Linear and Multilinear Algebra | 2021
DOI: https://doi.org/10.1080/03081087.2019.1698509
Joint m?quasihyponormal operators on a Hilbert space
ANNALS OF FUNCTIONAL ANALYSIS | 2021
DOI: https://doi.org/10.1007/s43034-021-00130-z