= Mathematical preliminaries
{c}
{tag=Work by John Watrous}
{title2=2018}
Online text: https://cs.uwaterloo.ca/~watrous/TQI/TQI.1.pdf
Chapter 1 of the authored book published by Cambridge University Press in April 2018. The online chapter does not establish a manuscript revision date.
Cited passages: Watrous, The Theory of Quantum Information, §1.1.2, printed pp. 17–18, equations (1.94)–(1.97), Hermitian, positive semidefinite and density operators; finite-dimensional setting.
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