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    Quaternionic Hilbert spaces and a von Neumann inequality
    (Taylor & Francis, 2012) Alpay, D.; Kaptanoğlu, H. T.
    We show that Drury's proof of the generalisation of the von Neumann inequality to the case of contractive rows of N-tuples of commuting operators still holds in the quaternionic case. The arguments require a seemingly new result on tensor products of quaternionic Hilbert spaces. © 2012 Copyright Taylor and Francis Group, LLC.