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Published in 2019 at "Afrika Matematika"
DOI: 10.1007/s13370-019-00690-3
Abstract: Let $${\mathcal {H}}$$H be a Hilbert space and let A be a positive bounded operator on $${\mathcal {H}}$$H. The semi-inner product $$\langle u\;|\;v \rangle _A:=\langle Au\;|\;v\rangle ,\;\;u,v \in {\mathcal {H}}$$⟨u|v⟩A:=⟨Au|v⟩,u,v∈H induces a semi-norm $$\left\| .\;\right\|…
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Keywords:
beta normal;
normal operators;
operators semi;
semi hilbertian ... See more keywords