Who’s afraid of quantum entanglements? I wish to tame the physical shrew by means of pure mathematics. In particular, I seek the sense and sensibility of quantum computers, with pride and prejudice in matrix analysis.
This expository talk may serve as a modern review of one of my old math paper. (The paper, consisting of 6 pages only, was published in 1975, with more than 1300 citations as recorded in Google Scholars 2016 January, including 700 RECENT research papers of Quantum Information.)