Du, Hongke On normal operators and its adjoint and the Putnam-Fuglede theorem. (Chinese. English summary) Zbl 0614.47020 Adv. Math., Beijing 16, No. 1, 67-71 (1987). MSC: 47B15 47B20 47A10 × Cite Format Result Cite Review PDF
Hou, Jinchuan; Du, Hongke On the converse of the Fuglede-Putnam theorem. (Chinese) Zbl 0552.47011 Adv. Math., Beijing 13, No. 1, 61-62 (1984). Reviewer: Li Shaokuan MSC: 47B20 47A05 47A62 × Cite Format Result Cite Review PDF