Abstract
We study the abstract complete geometric notion of unitaries in an operator space characterized in terms of the matrix numerical index, which is a quantity determined by a norm-one element and the matrix numerical radius.
Citation
Xu-Jian Huang. "Complete geometric unitaries in operator spaces." Illinois J. Math. 56 (2) 633 - 645, Summer 2012. https://doi.org/10.1215/ijm/1385129968
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