Browsing by Subject "operator pre-orders"

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A pre-order on operators with positive real part and its invariance under linear fractional transformations

Ter Horst, Sanne (Elsevier, 2014)

A pre-order and equivalence relation on the class of Hilbert space operators with positive real part are introduced, in correspondence with similar relations for contraction operators defined by Yu.L. Shmul'yan in [6]. It ...