On the unit sphere of positive operators
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DOI: 10.1215/17358787-2018-0017
Abstract: Given a C$^*$-algebra $A$, let $S(A^+)$ denote the set of those positive elements in the unit sphere of $A$. Let $H_1$, $H_2,$ $H_3$ and $H_4$ be complex Hilbert spaces, where $H_3$ and $H_4$ are infinite-dimensional… read more here.
Keywords: positive operators; unit sphere; sphere positive; unit ... See more keywords