Advance in Operator Theory and Jiang’s Seven Questions. Communications in Mathematical Research, [S. l.], v. 39, n. 2, p. 287–295, 2023. DOI: 10.4208/cmr.2022-0031. Disponível em: https://www.global-sci.com/index.php/cmr/article/view/9104. Acesso em: 27 feb. 2026.