Surveys in Mathematics and its Applications (Dec 2013)

Positive block matrices on Hilbert and Krein C*-modules

  • Mohammad Sal Moslehian,
  • Mahdi Dehghani,
  • Seyed Mohammad Sadegh Modarres

Journal volume & issue
Vol. 8 (2013)
pp. 23 – 34

Abstract

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Let H1 and H2 be Hilbert C*-modules. In this paper we give some necessary and sufficient conditions for the positivity of a block matrix on the Hilbert C*-module H1⊕H2.

Keywords