Fuglede–Putnam type theorems for (p,k) $(p,k)$-quasihyponormal operators via hyponormal operators
Abstract For Hilbert space operators S, X, and T, (S,X,T)∈FP $(S,X,T)\in FP$ means Fuglede–Putnam theorem holds for triplet (S,X,T) $(S,X,T)$, that is, SX=XT $SX=XT$ ensures S∗X=XT∗ $S^{\ast }X=XT^{\ast }$. Similarly, (S,T)∈FP $(S,T)\in FP$ means (S,X,T)∈FP $(S,X,T)\in FP$ holds for each operator X....
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-05-01
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| Series: | Journal of Inequalities and Applications |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13660-019-2073-z |